Cylinder cover standard sample piece of engine valve clearance control system

Abstract

A cylinder cover standard sample piece of an engine valve clearance control system belongs to the detection technical field. The middle part of the upper end surface of a main matrix is successively provided with a left location pinhole matrix, a right location pinhole matrix and a keel, wherein an exhaust side belt pulley shaft neck hole matrix and an exhaust side locating plate, and an air inlet side belt pulley shaft neck hole matrix and an air inlet side locating block are separately arranged on the two sides of the left location pinhole matrix, the periphery of the upper end surface of the main matrix are provided with an exhaust side positioning table No. 1, an exhaust side positioning table No. 2, an air inlet side positioning table No. 1, and air inlet side positioning table No. 2 in turn, all air inlet side components and exhaust side components are successively arranged on the two sides of the keel and fixedly arranged on the plane of the main matrix, and the lower end surface of the main matrix is provided with a bottom surface positioning body No. 1, a bottom surface positioning body No. 2, a bottom surface positioning body No. 3 and a bottom surface positioning body No. 4. The invention has the advantages that the prepared cylinder cover standard sample has high precision, light weight, wear resistance and long-term stable sample piece critical dimension, and is convenient to fetch.

Description

technical field [0001] The invention belongs to the technical field of detection, and mainly relates to a cylinder head standard sample of an engine valve clearance control system. Background technique [0002] When the automobile engine is working, metal parts such as the intake and exhaust valves of the engine are affected by the heat in the combustion chamber and cause thermal expansion. If there is no gap or too small gap between the valve and the transmission part when the engine is cold, it will The thermal expansion of the valve and transmission parts will cause the valve to be closed tightly, causing the engine to leak air during the compression and power strokes, reducing the engine power, and even difficult to start or damage parts in serious cases; on the contrary, if the valve clearance is too large, it will cause the valve It cannot be fully opened, and the intake and exhaust are not thorough, which will also reduce the engine power. In order to ensure the norm...

AI Technical Summary

Problems solved by technology

[0005] The structural design of the cylinder head standard sample is faced with the following problems: the sample must be taken by the operator to zero the measurement system before starting the measurement work, and then put back. Measurement characteristics; the sample is used on the production site, requiring wear resistance, and the key dimensions of the sample are stable for a long time

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