Anybody find it strange that they NEVER did a direct injection xuz?
04-16-11, 06:46 AM
#1
Anybody find it strange that they NEVER did a direct injection xuz?
Some of you may or may not know toyota released direct injected 1jz and 2jz engines (NA) for their a few of their japan market cars.
I did some digging and couldn't find any instance of a direct injected uz a platform they ran significantly longer than the jz series. Not until they release the 1ur-fse did they go with direct injection on their v8s. What do you think took so long?
Direct Injection FSEs
In around 2000, Toyota introduced what are probably the least recognised members of the JZ engine family – the FSE direct injection variants. These FSE 1JZ and 2JZ engines are aimed at achieving minimal emissions and fuel consumption together with no loss of performance.
The 2.5-litre 1JZ-FSE employs the same block as the conventional 1JZ-GE; everything up top, however, is unique. The ‘D4’ FSE employs a relatively narrow angle cylinder head with swirl control valves that serve to improve combustion efficiency. This is necessary to run at extremely lean air-fuel ratios around 20 to 40:1 at certain engine load and revs. Not surprisingly, fuel consumption is reduced by around 20 percent (when tested in the Japanese 10/15 urban mode).
Interestingly, normal unleaded fuel is enough to cope with the FSE’s 11:1 compression ratio.
The direct injection version of the 1JZ generates 147 kW (197HP) and 250Nm (184ft lbs) – virtually the same as the conventional VVT-i 1JZ-GE. This highly efficient engine is fitted to the 2000 Mark II, 2001 Brevis, Progres, Verossa, Crown and Crown Estate. All are fitted with an automatic transmission.
The 3-litre 2JZ-FSE uses the same direct injection principle as the smaller 1JZ version but runs an even higher 11.3:1 compression ratio. This engine matches the conventional VVT-i 2JZ-GE with 162 kW (217HP) and 294Nm (216ft lbs). The 2JZ-FSE is fitted to certain 1999 Crown models and the 2001 Brevis and Progres. Again, all use automatic transmissions.
In around 2000, Toyota introduced what are probably the least recognised members of the JZ engine family – the FSE direct injection variants. These FSE 1JZ and 2JZ engines are aimed at achieving minimal emissions and fuel consumption together with no loss of performance.
The 2.5-litre 1JZ-FSE employs the same block as the conventional 1JZ-GE; everything up top, however, is unique. The ‘D4’ FSE employs a relatively narrow angle cylinder head with swirl control valves that serve to improve combustion efficiency. This is necessary to run at extremely lean air-fuel ratios around 20 to 40:1 at certain engine load and revs. Not surprisingly, fuel consumption is reduced by around 20 percent (when tested in the Japanese 10/15 urban mode).
Interestingly, normal unleaded fuel is enough to cope with the FSE’s 11:1 compression ratio.
The direct injection version of the 1JZ generates 147 kW (197HP) and 250Nm (184ft lbs) – virtually the same as the conventional VVT-i 1JZ-GE. This highly efficient engine is fitted to the 2000 Mark II, 2001 Brevis, Progres, Verossa, Crown and Crown Estate. All are fitted with an automatic transmission.
The 3-litre 2JZ-FSE uses the same direct injection principle as the smaller 1JZ version but runs an even higher 11.3:1 compression ratio. This engine matches the conventional VVT-i 2JZ-GE with 162 kW (217HP) and 294Nm (216ft lbs). The 2JZ-FSE is fitted to certain 1999 Crown models and the 2001 Brevis and Progres. Again, all use automatic transmissions.
04-16-11, 07:29 AM
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There was a lot of drama with oil compatibility if I remember correcty for the first generation DI motors for any brand auto. They might have been waiting to see how the market responded.
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