Side type engine front end cover oil pump
An engine and front end cover technology, applied in the direction of pressure lubrication of lubricating pumps, etc., can solve the problems of difficult alignment between the crankshaft center and the oil pump rotor center, large crankshaft runout clearance, and oil leakage from the end face of the cover plate, so as to avoid cracking accidents, mutual Precision and smooth meshing, the effect of eliminating impact
Inactive Publication Date: 2011-05-25
HUNAN OIL PUMP
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Problems solved by technology
This technology has been very mature in the application of small-displacement cars, but in high-power engines, due to the large torque transmitted and the large run-out clearance of the crankshaft, periodic impacts will be generated during operation, and when the oil pump is assembled, the crankshaft will The center is not easy to align with the center of the oil pump rotor, resulting in the accident of rotor cracking caused by the meshing of the inner and outer rotors without gap during the engine operation
At the same time, due to the crankshaft transmission, the oil pump uses a cover plate structure, which has the defect of oil leakage from the end face of the cover plate, and the volumetric efficiency is not high
Method used
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[0014] Such as Figure 1-2 Shown: a side-mounted engine front end cover oil pump, which includes a pump body 1, a pump cover 2, a transmission gear 3, a transmission shaft 4, an outer rotor 5 and an inner rotor 6 arranged on the engine block end cover, and the pump body 1 is set on the side of the engine block end cover away from the crankshaft 7, the transmission gear 3 is installed on the upper part of the transmission shaft 4, and is connected with the gear on the crankshaft, and the two ends of the transmission shaft 4 are respectively installed on the pump body 1 and the pump cover In the shaft hole of 2, the outer rotor 5 and the inner rotor 6 are installed in the rotor holes of the pump body 1 and the pump cover 2.
[0015] During operation, the transmission gear 3 transmits the torque of the engine to the oil pump through the gear on the crankshaft.
[0016] The present invention is not limited to the specific structure above, as long as the engine end cover oil pump ...
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The invention discloses a side type engine front end cover oil pump. The oil pump comprises a pump body 1 which is arranged on an end cover of a cylinder body of an engine, a pump cover 2, a transmission gear 3, a transmission shaft 4, an outer rotor 5 and an inner rotor 6, wherein the pump body 1 is arranged on one side, which is far away from a crank shaft 7, of the end cover of the cylinder body of the engine; the transmission gear 3 is arranged on the upper part of the transmission shaft 4 and connected with a gear on the crank shaft; the two ends of the transmission shaft 4 are arranged in axle holes of the pump body 1 and the pump cover 2 respectively; and the outer rotor 5 and the inner rotor 6 are arranged in rotor holes of the pump body 1 and the pump cover 2 respectively. During operation, the transmission gear 3 transfers torque of the engine to the oil pump through the gear on the crank shaft. The oil pump is suitable for both a rotor type oil pump and a gear type oil pump. Compared with the prior art, the oil pump has the characteristics of compact structure and high volumetric efficiency, is easy to mount and is safe and reliable; and when the oil pump runs, an inner rotor type line is mutually engaged with an outer rotor type line, so the oil pump is precise and stable, and has low noise and stable pressure and flow of engine oil and the aims of environmental friendliness, emission reduction and noise reduction are fulfilled.
Description
technical field [0001] The invention relates to a structure of an internal combustion engine oil pump, in particular to a side-mounted engine front cover oil pump. Background technique [0002] At present, from the perspective of cost saving, a relatively large proportion of engines integrate the cylinder head cover and the rotor oil pump into one, and directly drive the inner rotor of the oil pump through the crankshaft to run. This technology has been very mature in the application of small-displacement cars, but in high-power engines, due to the large torque transmitted and the large run-out clearance of the crankshaft, periodic impacts will be generated during operation, and when the oil pump is assembled, the crankshaft will The center is not easy to align with the center of the oil pump rotor, resulting in the accident of rotor cracking when the inner and outer rotors mesh without clearance during engine operation. At the same time, due to the crankshaft transmission,...
Claims
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IPC IPC(8): F01M1/02
Inventor 许仲秋向志奇
Owner HUNAN OIL PUMP