next-gen Hyundai Sonata (revealed)
11-24-09, 01:27 PM
#347
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PRESS RELEASE
HYUNDAI ANNOUNCES NEW ENGINE TO POWER ITS DRIVE TOWARD FUEL ECONOMY LEADERSHIP
Theta II 2.4-liter I-4 engine with Gasoline Direct Injection goes into production
* Built in Alabama, starting this week
* First Application in 2011 Sonata
* 10 percent better fuel economy and improved durability
* 200 horsepower and 186 lb-ft of torque
High Quality Photos for Print are available here: Large
A new four-cylinder engine will help power Hyundai's drive towards becoming the fuel economy leader when it launches in the company's most popular car, the 2011 Sonata.
Today, Hyundai unveiled the engine, which is built at Hyundai Motor Manufacturing of Alabama, at its Hyundai America Technical Center in Superior Township, Michigan, where it engineers, designs, tests and certifies vehicles sold in the U.S.
The 2.4-liter Theta II GDI engine features gasoline direct injection (GDI) technology which operates with greater efficiency using less fuel, creating fewer emissions and delivering improved throttle response, all while making more power than a traditional port-injected engine. In the all-new 2011 Sonata, consumers can expect an estimated best-in-class fuel economy of 35 miles per gallon in highway driving (EPA certification pending).
"At Hyundai's core is a promise to deliver unparalleled quality and value to our customers," says Hyundai Motor America President and CEO, John Krafcik. "Leading the introduction of this technology in our most important, highest volume product, the all-new 2011 Sonata, demonstrates our commitment to delivering products that excite and reward Hyundai owners."
Hyundai announced in late 2008 that it would lead the industry in meeting newly proposed Corporate Average Fuel Economy (CAFÉ) standards, that would have required a fleet average of 35 mpg by 2020, five years early through a combination of new technologies, including hybrids and gasoline direct injection. Since that time, the industry has agreed to work with the more aggressive standard. The Obama administration has since proposed more aggressive standards of 35.5 mpg by 2016, which Hyundai supports and also plans to meet ahead of schedule in its quest to become the most fuel efficient brand in the U.S.
Theta II 2.4L GDI
Hyundai's Theta I-4 engine family is a proprietary design, engineered in Namyang, Korea and currently in production for applications all over the world at volumes exceeding 2 million annually. The new Theta II 2.4L GDI engine is a derivative of the Theta with major upgrades in technology and architecture. It features a unique block, valvetrain, front end accessory drive (FEAD), intake manifold, pistons, rods, crankshaft, variable induction system and catalyst. The Theta II 2.4L GDI delivers an estimated 200 horsepower @ 6,300 rpm and 186 lb.-ft. of torque @4,250 rpm. The most significant technology in the new engine is direct injection.
How GDI Differs from Conventional Port Injection
The key to direct injection is the use of individual fuel injectors for each cylinder strategically positioned to deliver the optimal fuel charge directly into the combustion chamber. In a traditional multi-port system, gasoline is delivered via the port of each cylinder, where it mixes with air and is drawn into the cylinders when the intake valve opens and the piston moves down. A drawback to the traditional system is when engine speeds increase, the time to open the valve to deliver fuel becomes progressively shorter making accurate delivery more challenging.
GDI avoids that issue and the shorter, more direct path of fuel delivery, allows for greater control of the optimum fuel mixture at the optimum moment, thus improving efficiency.
The fuel is injected by a camshaft-driven, high pressure pump that operates at pressures up to 2175 psi (150 bar). Direct injection also utilizes a higher than normal 11.3:1 compression ratio to for increased power. The pistons are "domed" to increase combustion efficiency.
The injection is split into two phases to achieve optimum combustion during the catalyst heating operation right after the cold start. First, the pilot injection is applied during the piston's descent in the intake stroke and then, in the second, at the end of the compression stroke, the rest of the fuel is injected and then ignited after some delay. This split-injection technique reduces loading on the catalytic converter and helps lower emissions.
When an engine is cold, so is the catalyst. Traditional engines run high rpm's for a few seconds upon startup to "fire" the catalysts. The GDI's split-injection strategy enables the catalyst to reach operating temperature faster. This helps reduce emissions by 30 percent during cold starts meeting California Air Resources Board's ULEV-2 and PZEV standards.
Dynamic Performance and Fuel Economy Improved
Compared to a conventional engine of the same displacement, GDI delivers 7 percent more torque at low engine rpm's and 12 percent more torque at the high-end for better take-off and overtaking performance. Best of all, GDI boosts gas mileage by up to 10 percent compared to a conventional engine.
Variable Induction System (VIS)
Design modifications in the Theta-II 2.4L GDI engine continue with a 2-stage variable induction system which improves engine breathing by automatically adjusting the volume of the air drawn into the combustion chamber to create the optimal air-to-fuel mix under different engine load conditions.
Continuously Variable Valve Timing (CVVT)
Depending on engine load and speed, CVVT can modulate the phasing of the valve opening and closing for more power and lower emissions. The new Continuously Variable Valve Timing System improves engine breathing on the intake and exhaust sides for better fuel economy and lower emissions. And the CVVT system is run by a new steel chain with an innovative roller and a retuned chain tensioner for the improved fuel efficiency and robust durability.
Weight and Friction Reduction
A critical engineering challenge is to find ways to reduce engine weight and internal friction to attain better fuel economy. Friction reduction measures in the Theta II 2.4L GDI include a revision of the piston pin from a fixed-type to a full-floating design which helps reduce friction between piston and cylinder wall. This further improves long-term durability.
And under the piston crown, engineers have added a piston cooling jet which sprays a fine oil mist to the bottom of the piston reducing heat and contributing to the durability.
Weight reduction measures include a new lighter-weight aluminum cylinder block and a lighter weight crankshaft. Hyundai engineers looked for weight savings throughout the engine, inside and out. In the end, the Theta-II 2.4L GDI is more than10 pounds lighter than its predecessor.
Next Steps?
Hyundai has stated aggressive goals aiming at fuel economy leadership. The benefits of GDI technology will be expanded over time to the entire family of Hyundai gasoline engines. GDI is one technology out of several that will help deliver superior efficiency, durability, quality and value to Hyundai customers.
HYUNDAI MOTOR AMERICA
Hyundai Motor America, headquartered in Fountain Valley, Calif., is a subsidiary of Hyundai Motor Co. of Korea. Hyundai vehicles are distributed throughout the United States by Hyundai Motor America and are sold and serviced through more than 790 dealerships nationwide. All Hyundai vehicles sold in the U.S. are covered by The Hyundai Advantage, America's Best Warranty. In addition, Hyundai Assurance is now offered on all new vehicles leased or purchased from a certified Hyundai dealer. The program is available to any consumer, regardless of age, health, employment record or financed amount of the vehicle. The program is complimentary for the first 12 months.
ABOUT HYUNDAI AMERICA TECHNICAL CENTER, INC.
Hyundai America Technical Center, Inc (HATCI), headquartered in Superior Township, Michigan, near Ann Arbor, is a subsidiary of Hyundai Motor Co. of Korea. HATCI provides design and engineering support and tests and certifies all Hyundai (and subsidiary Kia) products sold in North America. In addition to the headquarters in Michigan, HATCI operates two design centers in Irvine, Calif., two engineering facilities in Irvine and Chino, Calif. and the Hyundai California Proving Ground in California City.
HYUNDAI ANNOUNCES NEW ENGINE TO POWER ITS DRIVE TOWARD FUEL ECONOMY LEADERSHIP
Theta II 2.4-liter I-4 engine with Gasoline Direct Injection goes into production
* Built in Alabama, starting this week
* First Application in 2011 Sonata
* 10 percent better fuel economy and improved durability
* 200 horsepower and 186 lb-ft of torque
High Quality Photos for Print are available here: Large
A new four-cylinder engine will help power Hyundai's drive towards becoming the fuel economy leader when it launches in the company's most popular car, the 2011 Sonata.
Today, Hyundai unveiled the engine, which is built at Hyundai Motor Manufacturing of Alabama, at its Hyundai America Technical Center in Superior Township, Michigan, where it engineers, designs, tests and certifies vehicles sold in the U.S.
The 2.4-liter Theta II GDI engine features gasoline direct injection (GDI) technology which operates with greater efficiency using less fuel, creating fewer emissions and delivering improved throttle response, all while making more power than a traditional port-injected engine. In the all-new 2011 Sonata, consumers can expect an estimated best-in-class fuel economy of 35 miles per gallon in highway driving (EPA certification pending).
"At Hyundai's core is a promise to deliver unparalleled quality and value to our customers," says Hyundai Motor America President and CEO, John Krafcik. "Leading the introduction of this technology in our most important, highest volume product, the all-new 2011 Sonata, demonstrates our commitment to delivering products that excite and reward Hyundai owners."
Hyundai announced in late 2008 that it would lead the industry in meeting newly proposed Corporate Average Fuel Economy (CAFÉ) standards, that would have required a fleet average of 35 mpg by 2020, five years early through a combination of new technologies, including hybrids and gasoline direct injection. Since that time, the industry has agreed to work with the more aggressive standard. The Obama administration has since proposed more aggressive standards of 35.5 mpg by 2016, which Hyundai supports and also plans to meet ahead of schedule in its quest to become the most fuel efficient brand in the U.S.
Theta II 2.4L GDI
Hyundai's Theta I-4 engine family is a proprietary design, engineered in Namyang, Korea and currently in production for applications all over the world at volumes exceeding 2 million annually. The new Theta II 2.4L GDI engine is a derivative of the Theta with major upgrades in technology and architecture. It features a unique block, valvetrain, front end accessory drive (FEAD), intake manifold, pistons, rods, crankshaft, variable induction system and catalyst. The Theta II 2.4L GDI delivers an estimated 200 horsepower @ 6,300 rpm and 186 lb.-ft. of torque @4,250 rpm. The most significant technology in the new engine is direct injection.
How GDI Differs from Conventional Port Injection
The key to direct injection is the use of individual fuel injectors for each cylinder strategically positioned to deliver the optimal fuel charge directly into the combustion chamber. In a traditional multi-port system, gasoline is delivered via the port of each cylinder, where it mixes with air and is drawn into the cylinders when the intake valve opens and the piston moves down. A drawback to the traditional system is when engine speeds increase, the time to open the valve to deliver fuel becomes progressively shorter making accurate delivery more challenging.
GDI avoids that issue and the shorter, more direct path of fuel delivery, allows for greater control of the optimum fuel mixture at the optimum moment, thus improving efficiency.
The fuel is injected by a camshaft-driven, high pressure pump that operates at pressures up to 2175 psi (150 bar). Direct injection also utilizes a higher than normal 11.3:1 compression ratio to for increased power. The pistons are "domed" to increase combustion efficiency.
The injection is split into two phases to achieve optimum combustion during the catalyst heating operation right after the cold start. First, the pilot injection is applied during the piston's descent in the intake stroke and then, in the second, at the end of the compression stroke, the rest of the fuel is injected and then ignited after some delay. This split-injection technique reduces loading on the catalytic converter and helps lower emissions.
When an engine is cold, so is the catalyst. Traditional engines run high rpm's for a few seconds upon startup to "fire" the catalysts. The GDI's split-injection strategy enables the catalyst to reach operating temperature faster. This helps reduce emissions by 30 percent during cold starts meeting California Air Resources Board's ULEV-2 and PZEV standards.
Dynamic Performance and Fuel Economy Improved
Compared to a conventional engine of the same displacement, GDI delivers 7 percent more torque at low engine rpm's and 12 percent more torque at the high-end for better take-off and overtaking performance. Best of all, GDI boosts gas mileage by up to 10 percent compared to a conventional engine.
Variable Induction System (VIS)
Design modifications in the Theta-II 2.4L GDI engine continue with a 2-stage variable induction system which improves engine breathing by automatically adjusting the volume of the air drawn into the combustion chamber to create the optimal air-to-fuel mix under different engine load conditions.
Continuously Variable Valve Timing (CVVT)
Depending on engine load and speed, CVVT can modulate the phasing of the valve opening and closing for more power and lower emissions. The new Continuously Variable Valve Timing System improves engine breathing on the intake and exhaust sides for better fuel economy and lower emissions. And the CVVT system is run by a new steel chain with an innovative roller and a retuned chain tensioner for the improved fuel efficiency and robust durability.
Weight and Friction Reduction
A critical engineering challenge is to find ways to reduce engine weight and internal friction to attain better fuel economy. Friction reduction measures in the Theta II 2.4L GDI include a revision of the piston pin from a fixed-type to a full-floating design which helps reduce friction between piston and cylinder wall. This further improves long-term durability.
And under the piston crown, engineers have added a piston cooling jet which sprays a fine oil mist to the bottom of the piston reducing heat and contributing to the durability.
Weight reduction measures include a new lighter-weight aluminum cylinder block and a lighter weight crankshaft. Hyundai engineers looked for weight savings throughout the engine, inside and out. In the end, the Theta-II 2.4L GDI is more than10 pounds lighter than its predecessor.
Next Steps?
Hyundai has stated aggressive goals aiming at fuel economy leadership. The benefits of GDI technology will be expanded over time to the entire family of Hyundai gasoline engines. GDI is one technology out of several that will help deliver superior efficiency, durability, quality and value to Hyundai customers.
HYUNDAI MOTOR AMERICA
Hyundai Motor America, headquartered in Fountain Valley, Calif., is a subsidiary of Hyundai Motor Co. of Korea. Hyundai vehicles are distributed throughout the United States by Hyundai Motor America and are sold and serviced through more than 790 dealerships nationwide. All Hyundai vehicles sold in the U.S. are covered by The Hyundai Advantage, America's Best Warranty. In addition, Hyundai Assurance is now offered on all new vehicles leased or purchased from a certified Hyundai dealer. The program is available to any consumer, regardless of age, health, employment record or financed amount of the vehicle. The program is complimentary for the first 12 months.
ABOUT HYUNDAI AMERICA TECHNICAL CENTER, INC.
Hyundai America Technical Center, Inc (HATCI), headquartered in Superior Township, Michigan, near Ann Arbor, is a subsidiary of Hyundai Motor Co. of Korea. HATCI provides design and engineering support and tests and certifies all Hyundai (and subsidiary Kia) products sold in North America. In addition to the headquarters in Michigan, HATCI operates two design centers in Irvine, Calif., two engineering facilities in Irvine and Chino, Calif. and the Hyundai California Proving Ground in California City.
11-24-09, 01:28 PM
#348
Speaks French in Russian
Im still looking for this turbo-4 that some say is replacing the V6. Hyundai keeps saying DI 4cylinder only.
35mpg on the highway with 200hp is pretty good. Pretty similar to Camry Hybrid/HS highway mpg.
35mpg on the highway with 200hp is pretty good. Pretty similar to Camry Hybrid/HS highway mpg.
11-24-09, 08:58 PM
#349
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Those are some pretty damned good numbers from a 2.4 motor. One has to wonder what the hell Toyota is doing....
11-25-09, 07:17 AM
#353
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Hertz gave me a Hyundai Azera rental car recently. I had never before driven a Hyundai (or even sat in one). I was very impressed with the engine. It was very torquey and very quiet, superior to my '10 RX350 in these respects. (Overall, though, I don't think the Azera is the equal of an ES350 in refinement.)
02-19-10, 03:54 PM
#354
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The other thread got locked so here goes.
Saw a loaded Sonata today and will post pics later. It was black and it wasn't bad. I actually parked behind it to check it out as it had the 18" wheels.
It is a tall car and you notice the wheelgap and huge front fenders. I then noticed something I did not in pictures. The chrome strip under the windows continues to the front of the fender where the hood intersects (think C/E-class hood line with now a chrome strip). Different but not sure I liked it.
The headlights are big and the grill is just huge. Didn't like it, way to gaudy but that is my personal preference. I would like to see Hyundai remember they should be confident but understated. The front doesn't work for me. The sides scream CLS but cheaper. The windows seem large and the rear is very elegant and nice. Good work with the curves and looks different to most. Sadly the dealer slapped on like 20 stickers to say it was sold there.
I looked over and over. Fit and finish seemed good. Paint looked good with nice flakes in the black.
THe interior is really nice looking to me, flows well and TO ME seems like the new standard here, passing the Accord. Really gorgeous.
It them hit me what Hyundai did. Like how NIssan made the Altima a knock-off GS with a crappy interior, people bought it b/c of style. Hyundai went with a Benz CLS look BUT the interior is fantastic.
To me it seemed for the first time on par and better than an Accord or Camry in some aspects. Now will buyers get past the badge? We will see.
Saw a loaded Sonata today and will post pics later. It was black and it wasn't bad. I actually parked behind it to check it out as it had the 18" wheels.
It is a tall car and you notice the wheelgap and huge front fenders. I then noticed something I did not in pictures. The chrome strip under the windows continues to the front of the fender where the hood intersects (think C/E-class hood line with now a chrome strip). Different but not sure I liked it.
The headlights are big and the grill is just huge. Didn't like it, way to gaudy but that is my personal preference. I would like to see Hyundai remember they should be confident but understated. The front doesn't work for me. The sides scream CLS but cheaper. The windows seem large and the rear is very elegant and nice. Good work with the curves and looks different to most. Sadly the dealer slapped on like 20 stickers to say it was sold there.
I looked over and over. Fit and finish seemed good. Paint looked good with nice flakes in the black.
THe interior is really nice looking to me, flows well and TO ME seems like the new standard here, passing the Accord. Really gorgeous.
It them hit me what Hyundai did. Like how NIssan made the Altima a knock-off GS with a crappy interior, people bought it b/c of style. Hyundai went with a Benz CLS look BUT the interior is fantastic.
To me it seemed for the first time on par and better than an Accord or Camry in some aspects. Now will buyers get past the badge? We will see.
02-19-10, 04:22 PM
#355
Lexus Fanatic
Yes, similar observations to what I saw at the SJ Autoshow where the car was on display in early January. Our local dealers are expected to have the cars about now too.
That chrome strip through the clamshell hoodline is certainly unique, but I am still uncertain if I liked it.
Exterior styling-wise for this class of car I still prefer the Euro look of the Camry, but I might favor the look of the Sonata over the others (Accord, Fusion, etc.).
That chrome strip through the clamshell hoodline is certainly unique, but I am still uncertain if I liked it.
Exterior styling-wise for this class of car I still prefer the Euro look of the Camry, but I might favor the look of the Sonata over the others (Accord, Fusion, etc.).
02-19-10, 08:45 PM
#357
Lexus Fanatic
Nissan has managed to pull 350 hp from a V6 in the new Nismo Z. That is amazing considering just a few years back 5.7 L American V8's were barely in that neighborhood
02-20-10, 05:06 AM
#358
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The other thread got locked so here goes.
Saw a loaded Sonata today and will post pics later. It was black and it wasn't bad. I actually parked behind it to check it out as it had the 18" wheels.
It is a tall car and you notice the wheelgap and huge front fenders. I then noticed something I did not in pictures. The chrome strip under the windows continues to the front of the fender where the hood intersects (think C/E-class hood line with now a chrome strip). Different but not sure I liked it.
The headlights are big and the grill is just huge. Didn't like it, way to gaudy but that is my personal preference. I would like to see Hyundai remember they should be confident but understated. The front doesn't work for me. The sides scream CLS but cheaper. The windows seem large and the rear is very elegant and nice. Good work with the curves and looks different to most. Sadly the dealer slapped on like 20 stickers to say it was sold there.
I looked over and over. Fit and finish seemed good. Paint looked good with nice flakes in the black.
THe interior is really nice looking to me, flows well and TO ME seems like the new standard here, passing the Accord. Really gorgeous.
It them hit me what Hyundai did. Like how NIssan made the Altima a knock-off GS with a crappy interior, people bought it b/c of style. Hyundai went with a Benz CLS look BUT the interior is fantastic.
To me it seemed for the first time on par and better than an Accord or Camry in some aspects. Now will buyers get past the badge? We will see.
Saw a loaded Sonata today and will post pics later. It was black and it wasn't bad. I actually parked behind it to check it out as it had the 18" wheels.
It is a tall car and you notice the wheelgap and huge front fenders. I then noticed something I did not in pictures. The chrome strip under the windows continues to the front of the fender where the hood intersects (think C/E-class hood line with now a chrome strip). Different but not sure I liked it.
The headlights are big and the grill is just huge. Didn't like it, way to gaudy but that is my personal preference. I would like to see Hyundai remember they should be confident but understated. The front doesn't work for me. The sides scream CLS but cheaper. The windows seem large and the rear is very elegant and nice. Good work with the curves and looks different to most. Sadly the dealer slapped on like 20 stickers to say it was sold there.
I looked over and over. Fit and finish seemed good. Paint looked good with nice flakes in the black.
THe interior is really nice looking to me, flows well and TO ME seems like the new standard here, passing the Accord. Really gorgeous.
It them hit me what Hyundai did. Like how NIssan made the Altima a knock-off GS with a crappy interior, people bought it b/c of style. Hyundai went with a Benz CLS look BUT the interior is fantastic.
To me it seemed for the first time on par and better than an Accord or Camry in some aspects. Now will buyers get past the badge? We will see.
02-20-10, 04:17 PM
#359
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One might be mistaken for thinking that Hyundai executives are running a military operation, instead of an automotive company
.
02-20-10, 05:47 PM
#360
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http://www.nissanusa.com/zcoupe/
Last edited by mmarshall; 02-20-10 at 05:54 PM.