Pulse oil-supply type oil duct of engine cylinder body

Abstract

The invention discloses a pulse oil-supply type oil duct of an engine cylinder body. The structure of the pulse oil-supply type oil duct of the engine cylinder body is as follows: a cam shaft bushing is arranged inside a cam shaft bearing hole on the engine cylinder body; a section of an oil tank and an oil outlet are arranged on the cam shaft bushing; and a T-shaped oil hole is processed on the cam shaft. The oil tank and the oil outlet on the cam shaft bushing are respectively communicated with the cam shaft and a rocker arm oil supply channel when the cam shaft rotates to a certain position; a main oil duct can supply oil to a crank bearing, the cam shaft and a rocker arm at the same time. The oil tank on the cam shaft bushing is communicated with an oil supply branch channel of the cam shaft, but the oil outlet on the cam shaft bushing cannot be communicated with the oil supply channel of the rocker arm when the cam shaft rotates to deviate from the position. By ingenious designs of the cam shaft bushing and the cam shaft, the cam shaft can finish twice and two paths of oil supply with different oil supply quantities after rotating a circle. Lubrication of the rocker arm can be achieved, at the same time the pressure of the main oil duct is basically constant, and parts such as a crank, the cam shaft and the like are guaranteed to be fully lubricated.

Description

technical field [0001] The invention belongs to the structural technology of an internal combustion engine, and in particular relates to an oil channel of a cylinder block of the engine. Background technique [0002] When the diesel engine is running, the lubricating oil in the oil pan needs to be sent to the crankshaft, camshaft, gear, rocker arm and other components through the lubricating oil passage built into the cylinder block and cylinder head through the oil pump. If the oil pressure is not enough, it will increase the possibility of dry grinding of running parts due to lack of oil, thereby reducing the life of the engine, so it is very important to design a reasonable lubrication system for diesel engines. The design principle of the lubrication system is to provide an appropriate amount of lubricating oil according to the characteristics of the moving parts. For example, the crankshaft, camshaft and other parts need more lubricating oil when they are running, but t...

AI Technical Summary

Problems solved by technology

But the pipe diameter of the oil supply channel of the rocker arm is the same as that of the crankshaft and camshaft, so this oil supply method can obtain the same amount of oil supply as the crankshaft or camshaft, which will cause the pressure of the main oil channel of the engine to decrease, and the result is inevitable Reduce oil supply to crankshaft and camshaft

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