Piston connection rod assembly of engine and engine with same
A piston connecting rod and engine technology, applied in the field of vehicles, can solve the problems of engine emissions, poor economy, and low combustion thermal efficiency, and achieve the effects of reducing emissions, improving performance, and improving economy
Active Publication Date: 2014-01-22
GREAT WALL MOTOR CO LTD
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Problems solved by technology
The engine requires different compression ratios throughout the operating range, which cannot be met by traditional piston pins
Therefore, the traditional engine has insufficient compression ratio at low speed and partial load, low combustion thermal efficiency, poor engine emission and poor economy; while at high speed and high load, it is easy to cause early combustion and knocking due to the large compression ratio, resulting in poor engine performance. fall, and engine parts are susceptible to damage
Method used
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Embodiment Construction
[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0041] In describing the present invention, it should be understood that the terms "central", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" etc. is based on the orientation or position shown in the drawings The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the ...
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The invention discloses a piston connection rod assembly of an engine and the engine with he same. The piston connection rod assembly comprises a piston, a piston pin, a connection rod, a sliding block, a spring and a pressure-relief valve, wherein containing space is limited in the piston, and an oil cavity is formed in the containing space; the piston pin can be contained in the containing space in a vertical moving mode, and an oil channel is formed in the piston pin; the connection rod is sleeved on the piston pin and provided with an oil inlet port communicated with the oil channel; the sliding block is sleeved on the piston pin and positioned in the containing space, and a sliding block oil channel communicated with the oil channel and the oil cavity is arranged in the sliding block; the spring abuts against the position between the inner wall of the containing space and the side of the lateral wall opposite to the sliding block oil channel of the sliding block; the pressure-relief valve is arranged on at least one of the piston pin and the piston. By means of the piston connection rod assembly, the position of the piston relative to the connection rod can be changed, the volume of a combustion chamber of the engine is changed, and the purpose of regulating the compression ratio is achieved.
Description
technical field [0001] The invention relates to the field of vehicles, in particular to a piston connecting rod assembly of an engine and an engine with the same. Background technique [0002] The traditional engine generally adopts the fixed piston with the piston pin hole to achieve the purpose of transmitting the gas pressure generated by the combustion chamber. In general, when the engine is at different speeds and loads, the temperature and pressure of the mixture gas required to achieve the highest thermal efficiency are different. Therefore, different compression ratios are required during the entire operation of the engine. [0003] The traditional piston has a simple structure and only has the function of transmitting the gas pressure of the combustion chamber, but does not have the function of realizing variable compression ratio. The engine requires different compression ratios throughout the operating range, which cannot be met by traditional piston pins. There...
Claims
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IPC IPC(8): F02B75/32
Inventor邱继虎常明明张堪想王鹏梁永龙王建航贾絮影廖吕江
OwnerGREAT WALL MOTOR CO LTD