Put your seatbelt on before startingengine: I read some time ago that on average we waste several hundred pounds / dollars (x2) of fuel by starting the engine and then putting on a seatbelt.
The enginestarting system provides air, fuel, ignition and torque for rotating the engine to an rpm at which the engine can accelerate to idle rpm.
发动机起动系统提供引气、燃油、点火及扭矩,以使发动机转动并加速到慢车所需的转速。
3
The mixture must be of varying degrees of richness to suit engine operating conditions. It must be rich (have a higher percentage of fuel) for starting, acceleration, and high-speed operation.