Valve component for four-valve diesel

Abstract

The invention discloses a valve component for a four-valve diesel, which comprises valve bridges and valves at two ends of each air valve bridge. The top ends of the valves are in contacted connection with the valve bridges, each valve bridge presses down to push the valves at two ends to jointly move down under the action of a rocker, and the valves are open. When down pushing force of the rockers is insufficient to overcome restoring force of valve springs, the valves at two ends and the corresponding valve bridge move up together under the action of the springs, and the valves are closed. A valve height adjusting mechanism is arranged at one end of each valve bridge and enables the valve bridges to keep horizontal and vertical movement in use. The top ends of valve rods can be uniform in height by adjusting the adjusting mechanism at one end of each valve bridge to effectively guarantee vertical movement of the valve bridges, and the two valves controlled by each valve bridge can be stressed simultaneously, so that unfavorable influences of non-uniform top heights of the valve rods caused by manufacturing and fitting problems of the valves can be effectively eliminated.

Description

technical field [0001] The invention relates to the field of diesel engines, in particular to a valve assembly of a four-valve diesel engine. Background technique [0002] At present, for a diesel engine with four valves in one cylinder head, the existing technology uses one valve bridge to directly press down two valves for driving two exhaust valves of one cylinder. The matching and research of the valve seat ring (when the valve is assembled, it is often necessary to grind the valve seat ring to make the valve installation meet the design requirements) will cause the height of the top of the two valve stems to be different, so that the valve bridge cannot be guaranteed after installation. Horizontal, and then the vertical movement required during the downward movement of the valve bridge cannot be guaranteed, causing the force transmitted from the rocker arm to the valve bridge to be inclined, which eventually leads to uneven force on the two exhaust valves of the same cy...

AI Technical Summary

Problems solved by technology

[0002] At present, for a diesel engine with four valves in one cylinder head, the existing technology uses one valve bridge to directly press down two valves for driving two exhaust valves of one cylinder. The matching and research of the valve seat ring (when the valve is assembled, it is often necessary to grind the valve seat ring to make the valve installation meet the design requirements) will cause the height of the top of the two valve stems to be different, so that the valve bridge cannot be guaranteed after installation. Horizontal, and then the vertical movement required during the downward movement of the valve bridge cannot be guaranteed, causing the force transmitted from the rocker arm to the valve bridge to be inclined, which eventually leads to uneven force on the two exhaust valves of the same cylinder, causing the valve stem to break easily Fault

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