The gear ratio is 3.42, which seems tall until you consider that the powerband of the Duramax diesel is considerably
lower than a gas engine.
Not exact matches
The hot, humid exhaust from jet
engines mixes with the atmosphere, which at high altitude is of much
lower vapor pressure and temperature
than the exhaust
gas.
High compression
engines (performance cars) would cause
low octane
gas to combust under the pressure alone rather
than from the spark plug firing, resulting in knocking, which is very bad for the
engine.
With two conventional turbochargers positioned in the
engine's vee, a third is positioned to feed air into the
engine at
lower engine speeds, and rather
than be driven by exhaust
gases as per the other two turbos, it is driven by a 7kw electric motor.
The Sprinter 2500 is powered by a 2 - stage turbocharged
engine that provides ample
low end torque for moving the heaviest loads, and burns less fuel
than comparably powerful
gas engines.
This higher factor under overrun was chosen, first, because the
engine's drag force is
lower than its maximum torque and, second, because this configuration serves to stabilise the car, preventing it from swerving or turning under load change in bends, as now brake force is applied more evenly on both wheels when the driver suddenly takes back the
gas pedal.
Thanks to radical downsizing, the Turbocharged Small Gasoline
Engine achieves diesel - like CO2 emission levels, which are further reduced in its natural
gas version with CO2 emissions
lower than 80 g / km in many vehicle applications.
The purpose of the HV battery is to use electricity when the
gas engine is not efficient — when power demand is very
low (less
than 15hp).
Certainly
engine - for - heat EV mode does burn some
gas, even if at a
lower rate
than normal.