A rocker arm type engine valve clearance adjustment device

Abstract

The invention discloses a rocker arm type engine valve clearance adjustment device which comprises a base frame, a plurality of adjustment pieces and driving pieces; the adjustment pieces are rotationally supported on the base frame; a connecting part is arranged at the first end of each adjustment piece; the connecting parts are connected with valve clearance adjustment bolts; and the driving pieces are connected with the second ends of the adjustment pieces to drive the adjustment pieces to synchronously rotate. Compared with the prior art, with the adoption of the multiple adjustment piecescapable of synchronously rotating to adjust air valves corresponding to multiple rocker arms at the same time, the valve clearance adjustment efficiency is improved, the consistency of valve clearances between engines and between the air valves is ensured, differences caused by human factors and environmental factors are lowered to the greatest extent, the valve clearance adjustment difficulty islowered at the same time, and any inexperienced staff or staff having inadequate experience can complete such work effortlessly.

Description

technical field [0001] The invention relates to the technical field of automobile debugging tooling, in particular to a rocker arm type engine valve clearance adjusting device. Background technique [0002] For rocker-arm single-camshaft sixteen-valve four-cylinder engines, during R&D trial production or production, it is necessary to adjust the cold clearance of the valves. By rotating the valve clearance adjustment bolt 15' to achieve a suitable valve clearance, for example, intake Door clearance: (0.30±0.04)mm, exhaust valve clearance: (0.60±0.04)mm, and then tighten the valve clearance adjusting bolt 15'lock nut according to the technical requirements of assembly and adjustment. [0003] The reason why there is a valve gap between the tail end of the valve stem and the valve driving parts is to compensate for the expansion of the valve after being heated. But this clearance must be appropriate. If it is too large, the valve opening will be reduced (the lift is not enou...

AI Technical Summary

Problems solved by technology

[0008] (1) The efficiency is low, whether the No. 1 cylinder 1' piston is located at the compression TDC, the No. 4 cylinder 4' piston is located at the exhaust TDC or the No. 1 cylinder 1' piston is located at the exhaust TDC, and the No. 'The pistons are located at the top dead center of compression, and each needs to be adjusted one by one to adjust the valve clearance. For example, first adjust the valve clearance corresponding to the first rocker arm 5', then the second rocker arm 6', the third rocker arm 7', and the sixth rocker arm. Rocker arm 10', etc.;

[0009] (2) Poor consistency of valve clearance adjustment, or lead to unqualified valve clearance, such as between the valves of each engine, and between the valves of each engine, there will be differences due to different operators and different operating environments;

[0010] (3) Most of the experience components, experienced operators can complete the valve clearance adjustment work well, but it is difficult or impossible for inexperienced new employees to complete this work, and there is a certain degree of difficulty in operation

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