Cool new Porsche 911 hybrid. Tuned to always run lambda 1 with no power enrichment.

[JayRolla]

Not sure of other cars that do this. But a 3.6l running 26psi and always keeps air/fuel at 1.0 lambda with no power enrichment for better emissions.

No more accessory drive. The transmission mounted motor is a starter and generator. The air conditioning compressor driven by a 400-volt motor and the water pump has been moved inside the engine driven by the oil pumps saving 40lbs.

The turbocharger has a 27-hp electric motor that spools it at low rpm achieving full boost in less than 1 sec at 2000rpm. This new electric turbo has no waste gate and the motor turns into a generator and harvests up to 15 horsepower, in the process of providing enough drag to keep the turbo from over spinning. That electricity then feeds into the electric motor.

Pretty cool tech these car manufacturers are doing even on these old ICE cars. Glad they are not just thinking EV anymore.

https://www.caranddriver.com/news/a6...brid-revealed/

[blindsquirrel]

Current-gen F1 V6 (yuk) turbos run 18:1 CR (rules-limited), 5.5 BAR boost ("or more"), at 1.3-1.4 Lambda.

[JayRolla]

Current-gen F1 V6 (yuk) turbos run 18:1 CR (rules-limited), 5.5 BAR boost ("or more"), at 1.3-1.4 Lambda.

Holy!!

[blindsquirrel]

https://www.youtube.com/watch?v=mUq-K9jcaB8

[Alvin]

Not sure of other cars that do this. But a 3.6l running 26psi and always keeps air/fuel at 1.0 lambda with no power enrichment for better emissions.

No more accessory drive. The transmission mounted motor is a starter and generator. The air conditioning compressor driven by a 400-volt motor and the water pump has been moved inside the engine driven by the oil pumps saving 40lbs.

The turbocharger has a 27-hp electric motor that spools it at low rpm achieving full boost in less than 1 sec at 2000rpm. This new electric turbo has no waste gate and the motor turns into a generator and harvests up to 15 horsepower, in the process of providing enough drag to keep the turbo from over spinning. That electricity then feeds into the electric motor.

Pretty cool tech these car manufacturers are doing even on these old ICE cars. Glad they are not just thinking EV anymore.

https://www.caranddriver.com/news/a6...brid-revealed/

Supercharged/turbo charged watercraft have been that way for a while. Lots of boost and traditionally very lean AFR's.

I'll bet in both situations getting fuel to them would make more power.

[JayRolla]

Supercharged/turbo charged watercraft have been that way for a while. Lots of boost and traditionally very lean AFR's.

I'll bet in both situations getting fuel to them would make more power.

Yeah the article mentions how they went from a 3.0L to a 3.6L, boost up from 18 to 26psi and added an electric motor and only made 5hp more and no tq gain. Says they have to pull timing to keep cylinder temps down and they only did it to get better emissions. Would be cool to see what it could do with a richer AFR and add some timing.

[blindsquirrel]

https://newsroom.porsche.com/en_US/2...ogy-31050.html

While the regulations specify that the hybrid components and the gearbox must be cost-efficient standardised components, it allows great leeway in choosing the combustion engine. In principle, the following applies: Power output is capped at 520 kW (707 PS) with the minimum weight set at 180 kilograms including the periphery.
[...]
In the LMDh prototype, the power unit runs in conjunction with two turbochargers from the Dutch manufacturer Van der Lee, which increases the ambient pressure by just 0.3 bars.