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Luojia motorcycle Engine Operating Principles
Nov 30, 2017

Most automobile engines are internal combustion, reciprocating 4-stroke gasoline engines, but other types have 

been used, including the diesel, the rotary ( Wankel ) , the 2-srtoke, and stratified charge.

Most automobile engines are internal combustion, reciprocating 4-stroke gasoline engines, but other types have 

been used, including the diesel, the rotary ( Wankel ) , the 2-srtoke, and stratified charge.

Most automobile engines are internal combustion, reciprocating 4-stroke gasoline engines, but other types have 

been used, including the diesel, the rotary ( Wankel ) , the 2-srtoke, and stratified charge.

Most automobile engines are internal combustion, reciprocating 4-stroke gasoline engines, but other types have been used, including the diesel, the rotary ( Wankel ) , the 2-srtoke, and stratified charge.

eciprocating means up and down or back and forth, It is the up and down action of a piston in the 

cylinder block, or engine block. The block is an iron or aluminum casting that contains engine cylinders 

and passges called water jackets for coolant circulation. The top of the block is covered with the cylinder 

head. Which forms the combustion chamber. The bottom of the block is covered with an oil pan or oil 

sump.

Reciprocating means up and down or back and forth, It is the up and down action of a piston in the cylinder block, or engine block. The block is an iron or aluminum casting that contains engine cylinders and passges called water jackets for coolant circulation. The top of the block is covered with the cylinder head. Which forms the combustion chamber. The bottom of the block is covered with an oil pan or oil sump.

Power is produced by the linear motion of a piston in a cylinder. However, this linear motion must be 

changed into rotary motion to turn the wheels of cars. The piston is attached to the top of a connecting 

rod by a pin, called a piston pin or wrist pin. The bottom of the connecting rod is attached to the 

crankshaft. The connecting rod transmits the up-and-down motion of the piston to the crankshaft, which 

changes it into rotary motion.The connecting rod is mounted on the crankshaft with large beaings called 

rod bearings. Similar bearings, called main bearings, are used to mount the crankshaft in the block

Power is produced by the linear motion of a piston in a cylinder. However, this linear motion must be changed into rotary motion to turn the wheels of cars. The piston is attached to the top of a connecting rod by a pin, called a piston pin or wrist pin. The bottom of the connecting rod is attached to the crankshaft. The connecting rod transmits the up-and-down motion of the piston to the crankshaft, which changes it into rotary motion.The connecting rod is mounted on the crankshaft with large beaings called rod bearings. Similar bearings, called main bearings, are used to mount the crankshaft in the block.

The diameter of the cylinder is called the engine bore. Displacement and compression ratio are two frequently used engine specifications. Displacement indicates engine size, and compression ratio compares the total cylinder volume to compression chamber volume.

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