Timing chain wheel chamber shell

Abstract

The invention discloses a technology of an engine timing system, and relates to a timing chain wheel shell. The timing chain wheel shell comprises a chain wheel cover cap, connecting holes are formed in the edge of the chain wheel cover cap, an intake camshaft groove and an exhaust camshaft groove are formed in the top of the chain wheel cover cap, and are respectively formed in the outside and the inside of the chain wheel cover cap respectively; semicircular rubber plugs are filled in the intake camshaft groove and the exhaust camshaft groove; an air phase commutation guide wheel is arranged between the grooves; a chain guiding groove is formed in a part, which is close to the exhaust camshaft groove, of the inner side of the chain wheel cover cap; and a crankshaft chain wheel is further arranged on the chain wheel cover cap, and is connected with a volute guiding groove. by the chain guiding groove and the volute guiding groove, chain teeth skipping caused by the reason of excessive fluctuation of tension of a timing chain system and the like is prevented, and repairing cost is saved; and during phase commutation, only the semicircular rubber plugs need to be taken down, and the time and labor are saved.

Description

technical field [0001] The invention relates to an engine timing system technology, in particular to a timing sprocket housing. Background technique [0002] The timing sprocket is an important part of the engine gas distribution system. The timing sprocket is equivalent to the timing belt. The connection between the timing sprocket and the crankshaft and a certain transmission ratio are used to ensure the accuracy of the intake and exhaust timing. . However, after the chain has been used for a period of time, there will be a certain amount of elongation. After the chain is elongated, the transmission accuracy of the phase will be affected, resulting in a deviation of the valve phase angle. It is necessary to remove the valve chamber cover and timing sprocket cover to adjust the phase. Time-consuming and labor-intensive, increasing costs. Moreover, the chain will wear with the sprocket during the operation of the engine, and excessive fluctuations in the tension of the tim...

AI Technical Summary

Problems solved by technology

However, after the chain has been used for a period of time, there will be a certain amount of elongation. After the chain is elongated, the transmission accuracy of the phase will be affected, resulting in a deviation of the valve phase angle. It is necessary to remove the valve chamber cover and timing sprocket cover to adjust the phase. Time-consuming and labor-intensive, increasing costs

Moreover, the chain will wear with the sprocket during the operation of the engine, and excessive fluctuations in the tension of the timing chain system will cause the chain to skip teeth, resulting in a decrease in engine performance and even damage to the components of the gas distribution component.

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