According to the piston movement pattern classification: can be divided into reciprocating piston type internal combustion engine piston and rotary piston type two kinds.The piston within the cylinder for reciprocating linear motion, the piston within the cylinder for rotary motion.
According to the classification of air intake system: internal combustion engine according to whether the air intake system adopts the pressurization method can be divided into naturally aspirated engine (not pressure) and forced air intake supercharged engine.If the air intake is close to atmospheric conditions, is for a turbocharged internal combustion engine or naturally aspirated engine;Higher if using the supercharger inlet pressure, inlet density increases, for turbocharged internal combustion engine.Booster can increase the internal combustion engine power.
In accordance with the classification according to the cylinder arrangement: internal combustion engine cylinder arrangement different can be divided into single row, double columns and three columns.Single engine, each cylinder in a row is generally vertical arrangement, but in order to reduce the height, sometimes also decorate the cylinder into declining even level.The double column type engine cylinder arranged in two columns, the Angle between the two columns of < 180 ° (usually 90 °) called V type engine, if the Angle between the two columns = 180 ° as opposed engine.Arranged in three columns, three column type cylinder as W type engine.
According to the number of cylinders categories: internal combustion engine according to the different number of cylinders can be divided into single cylinder and multi-cylinder engine.There is only one cylinder of engine called single cylinder engine;There are two or more cylinder engine called a multi-cylinder engine.Such as double cylinder, three cylinder, four, five, six, eight cylinder cylinder cylinder cylinder, 12 cylinder and 16 cylinders are multi-cylinder engine.The modern automobile engine with four cylinders, six, eight cylinder engine cylinder.
According to the different cooling ways according to cooling way classification: internal combustion engine can be divided into water-cooled engines and air-cooled engine.Water-cooled engine is used in the cylinder block and cylinder head to cycle in the cooling jacket coolant as cooling medium for cooling;Is the use of air-cooled engine flow in the heat sink on the surface of the cylinder block and cylinder head air as cooling medium for cooling.Water-cooled engine cooling uniformity, reliable operation, good cooling effect, is widely used in modern automobile engine.
Classification according to the schedule: internal combustion engine in proportion to the number of stroke required to complete a working cycle can be divided into four stroke internal combustion engine and two stroke internal combustion engine.Turn the crankshaft two laps (720 °), a piston reciprocating movement up and down inside the cylinder four stroke, to complete a working cycle of internal combustion engine is called four stroke internal combustion engine;And one revolution of the crankshaft (360 °), a piston reciprocating movement up and down inside the cylinder two stroke, to complete a working cycle of internal combustion engine is called two stroke internal combustion engines.Automobile engine widely used four stroke internal combustion engine.
According to the classification: fuel used in internal combustion engine according to the fuel used by different can be divided into gasoline engine and diesel engine.Using gasoline as fuel of internal combustion engine is called a gasoline engine;Use diesel engine as the fuel of internal combustion engine called a diesel engine.Gasoline engine and diesel engine to compare each have characteristics;Gasoline engine speed is high, the quality is small, low noise, easy to start manufacturing cost is low;Diesel engine compression ratio, high thermal efficiency, economic performance and emission performance are better than gasoline engines.
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