Engines

     The engine is the power plant that produces the energy needed to propel the vehicleand operate other systems. It converts the heat energy of a fuel (gasoline，diesel，alcohol，etc) into movement. The burning and expansion of the gases in the combustion chamberproduces pressure. The engine piston, connecting rod and crankshaft convert this pressureinto motion for moving the car and operating other systems.

    Engine is usually located in the front portion of the body. Placing the heavy engine inthis position makes the vehicles safer in the event of a head-on collision. In a few vehicles，the engine is mounted in the rear to improve handling.