Engine assembly Classification

Hits：1439         Date：2015/9/30

Automobile engine is generally to acquire kinetic energy through an internal combustion gasoline (diesel), so the car engine is an internal combustion engine.
First, according to the different fuels: gasoline and diesel engines can be divided. Gasoline and diesel compare their own characteristics; gasoline engine high speed, low mass, low noise, easy to start, low manufacturing costs; diesel engine compression ratio, high thermal efficiency, emissions performance and better economic performance than the gasoline engine.
Second, by piston movement: piston reciprocating piston internal combustion engine can be divided into two piston and rotary. The former pistons reciprocating linear motion in the cylinder, which rotates the piston in the cylinder.
Third, according to the number of different cylinders: single-cylinder engine and can be divided into multi-cylinder engine. Only one cylinder of the engine is called single-cylinder engine; two or more cylinders of the engine is called multi-cylinder engine. Modern car engines use more three-cylinder, four, six, eight-cylinder engine.
Fourth, according to different cylinder arrangement: it can be divided into single, double and three-column type. Each single cylinder engine arranged in a row, generally vertically arranged, but in order to reduce the height, sometimes the cylinder arranged inclined or even horizontal. Double-row cylinder engine arranged in two columns to the angle between two columns <180 ° (typically 90 °) called V-type engine, if the angle between two columns = 180 ° referred to mounted engine. Three cylinders arranged in three formula to become a W-type engine.
Fifth, according to the travel category: stroke internal combustion engine according to the number of cycles required to complete a job can be divided into four-stroke and two-stroke internal combustion engine. Automobile engines typically use four-stroke internal combustion engine. Four-stroke internal combustion engine is used to complete a work cycle, the piston reciprocates within the cylinder up and down the four-stroke crankshaft to turn two laps (720 °); two-stroke internal combustion engine is half of the work process.
Sixth, whether the intake system in accordance with the booster mode: can be divided into supercharged (forced induction) and non-supercharged (naturally aspirated). Improve the use of the turbocharger intake pressure, intake air density increases, the supercharged engine, this approach will help improve the internal combustion engine power. Intake at near atmospheric state conducted a non-supercharged internal combustion engine or a naturally aspirated internal combustion engine;
Seven, in accordance with the cooling category: the internal combustion engine can be divided in different ways according to the cooling water-cooled engine and air-cooled engines. The use of a water-cooled engine is circulating in the cylinder block and the cylinder head cooling water jacket cooling liquid as a cooling medium for cooling; and flowing in the air-cooled engine is the use of the cylinder block and the cylinder head air between the outer surface of the heat sink as a cooling medium cooling. Water-cooled engine cooling uniform, reliable, good cooling effect, is widely used in modern vehicle engines.

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