16 RX 350 AWD System
11-20-15 | 10:01 AM
#4
Lexus Champion
Joined: Feb 2013
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From: SoCal
It would've been nice if Lexus decided to make the AWD rear wheel biased rather than FWD most of the time until slip is detected. But I know that would've been kind of an unreasonable request since the RX is a FWD platform.
11-20-15 | 10:12 AM
#5
Thread Starter
Driver School Candidate
Joined: Sep 2015
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From: FLORIDA
11-20-15 | 10:15 AM
#6
Thread Starter
Driver School Candidate
Joined: Sep 2015
Posts: 41
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From: FLORIDA
Just curious to know if the AWD for the new RX also helps the driving dynamic such as sharp turning like Acura SHAWD.
11-20-15 | 04:05 PM
#7
Lead Lap
Joined: Mar 2015
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From: In your head
The 4th gen improves the AWD should behave like the SH-AWD in the axle bias and also torque control (dont remeber if its an F sport only thing) .
For me, I cannot really say the SHAWD does anything unless you are continuously on the limit with the MDX
EDIT: After researching what Active Torque Control is, it seems some marketers had a run on the terminology to confused customers with terms similar to their german counter parts.
Torque Vectoring/Active Torque control are two very different things.
Torque Vectoring from Acura is side to side distrbution and also front and rear. With 100% in any direction. To be lazy and specific:
SH-AWD operating parameters include:
Direct Yaw Control promotes precise line trace in all conditions
Full-time "active and intelligent" all-wheel drive requires no driver interaction
SH-AWD direct control electromagnetic clutches provide ultra-quick response
Grade logic control allows worry-free starting on steep grades with up to 70 percent of available torque being sent to the rear wheels
Up to 70 percent of available torque can be directed to the rear wheels during hill climb acceleration for maximum traction
Up to 50 percent of available torque can be transferred to the front wheels during cruising to help maximize fuel efficiency
In hard cornering, up to 50 percent of available torque can be directed to the rear axle for enhanced chassis balance and increased cornering capability
Up to 100 percent of the torque sent to the rear axle can be applied to either rear wheel as the traction conditions dictate
37 percent increase in rear torque capacity as compared to the previous MDX VTM-4 system
7 percent reduction in weight compared to the previous VTM-4 system
Simialr types of setups are applicable to the european setups
Lexus on the other hand just uses ATC as a means of describing Front to back distr. with max 50% of torque available to the rear. Nothing crazy
For me, I cannot really say the SHAWD does anything unless you are continuously on the limit with the MDX
EDIT: After researching what Active Torque Control is, it seems some marketers had a run on the terminology to confused customers with terms similar to their german counter parts.
Torque Vectoring/Active Torque control are two very different things.
Torque Vectoring from Acura is side to side distrbution and also front and rear. With 100% in any direction. To be lazy and specific:
SH-AWD operating parameters include:
Direct Yaw Control promotes precise line trace in all conditions
Full-time "active and intelligent" all-wheel drive requires no driver interaction
SH-AWD direct control electromagnetic clutches provide ultra-quick response
Grade logic control allows worry-free starting on steep grades with up to 70 percent of available torque being sent to the rear wheels
Up to 70 percent of available torque can be directed to the rear wheels during hill climb acceleration for maximum traction
Up to 50 percent of available torque can be transferred to the front wheels during cruising to help maximize fuel efficiency
In hard cornering, up to 50 percent of available torque can be directed to the rear axle for enhanced chassis balance and increased cornering capability
Up to 100 percent of the torque sent to the rear axle can be applied to either rear wheel as the traction conditions dictate
37 percent increase in rear torque capacity as compared to the previous MDX VTM-4 system
7 percent reduction in weight compared to the previous VTM-4 system
Simialr types of setups are applicable to the european setups
Lexus on the other hand just uses ATC as a means of describing Front to back distr. with max 50% of torque available to the rear. Nothing crazy
Last edited by coolsaber; 02-14-16 at 05:00 PM.
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02-15-16 | 06:56 AM
#11
Lexus Champion
Joined: Nov 2013
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From: WA
No, the '16 MDX is still available with SH-AWD.
http://www.acura.com/Features.aspx?m...allwheel_drive
Acura has handling and cornering down to a science with a new hydraulically-controlled iteration of its Super Handling All-Wheel Drive™ (SH-AWD®) system. This sophisticated system is designed to enhance high-performance dry-road handling while providing the same all-weather advantages of conventional all-wheel drive. By continuously directing engine power to match weight distribution, available traction, and other conditions, SH-AWD provides seamless power transitions and supreme agility. The feel of such enhanced high-performance cornering is one that simply can't be matched by front, rear or conventional all-wheel drive systems.
The system continuously determines the optimal level of power distribution between the front and rear wheels—and between the rear wheels—based on an analysis of wheel speed, steering angle, lateral G-force and yaw rate.
The new-for-2016 system is 25% lighter and further reduces understeer in a corner or turn by overdriving the outside rear by as much as 2.7% (versus the previous system’s 1.7% maximum) helping the MDX rotate through the turn.
To improve fuel efficiency, up to 90% of the power is sent to the front wheels when cruising in a straight line.
As weight shifts to the rear of the MDX during hard acceleration, the SH-AWD system transfers up to 45% of engine power to the rear wheels to take advantage of available rear-wheel traction.
On a curve under hard acceleration, 70% of effective torque can be directed to the rear—all of which can go to the outside wheel to improve cornering by directing power where weight has shifted.
The system continuously determines the optimal level of power distribution between the front and rear wheels—and between the rear wheels—based on an analysis of wheel speed, steering angle, lateral G-force and yaw rate.
The new-for-2016 system is 25% lighter and further reduces understeer in a corner or turn by overdriving the outside rear by as much as 2.7% (versus the previous system’s 1.7% maximum) helping the MDX rotate through the turn.
To improve fuel efficiency, up to 90% of the power is sent to the front wheels when cruising in a straight line.
As weight shifts to the rear of the MDX during hard acceleration, the SH-AWD system transfers up to 45% of engine power to the rear wheels to take advantage of available rear-wheel traction.
On a curve under hard acceleration, 70% of effective torque can be directed to the rear—all of which can go to the outside wheel to improve cornering by directing power where weight has shifted.
http://www.acura.com/Features.aspx?m...allwheel_drive
02-15-16 | 08:59 AM
#12
Lead Lap
Joined: Mar 2015
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From: In your head
02-15-16 | 02:50 PM
#13
Intermediate
Joined: Jun 2008
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From: PA
02-16-16 | 07:20 PM
#14
Rookie
Joined: Feb 2012
Posts: 41
Likes: 2
From: Ontario
It does as far as i can tell...putting your foot on the gas in the summer or winter and i feel the power in the rear first......in winter the back can swing out..in summer....no torque steer when taking off from a start
02-16-16 | 08:28 PM
#15
Lead Lap
Joined: Mar 2015
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From: In your head
rear biased AWD system operate majority of the time in RWD mode while the Lexus operates in FWD mode until you do as you said; introduce slip aka hard launches.