Variable valve timing performance test device of gasoline engine

Abstract

The invention discloses a variable valve timing performance test device of a gasoline engine, which is used for detecting performance parameters of the timing of a variable valve of a gasoline engine under different operating conditions. The device comprises a test workbench, a hydraulic pressure part and a control part, wherein the hydraulic pressure part is connected with a pipeline of the testworkbench; the control part is connected with the test workbench and a circuit of the hydraulic pressure part; the test workbench comprises a machine frame; a tested piece is arranged on the machine frame; the machine frame is also provided with a driving motor and a transmission shaft; a torque sensor is arranged between an output shaft of the driving motor and the transmission shaft; the transmission shaft is in transmission connection with the tested piece; and the transmission shaft is driven by the driving motor to rotate so as to rotate the tested piece. The device can automatically test the timing comprehensive performance of the variable valve of the gasoline engine according to test requirements, ensure the test precision and control precision by optimizing a system structure andselecting components reasonably, and realize the full automation of a test process according to a scheduled test scheme.

Description

technical field [0001] The invention relates to the technical field of gasoline engines, in particular to a test device for detecting performance parameters of variable valve timing (VVT) of automobile gasoline engines under different working conditions. Background technique [0002] At present, the domestic automobile industry has not made great progress in the research on variable valve timing (VVT) of gasoline engines, mainly due to the performance requirements of key components and test theories and methods, especially the performance near the limit There has been no major breakthrough in simulating the extreme working environment. The research on the performance test of the variable valve timing (VVT) component of the gasoline engine, the variable hydraulic vane wheel and the OCV valve, is mainly based on theory, while for high speed, high temperature and strong torque It is difficult to test the variable valve timing (VVT) performance parameters of gasoline engines und...

AI Technical Summary

Problems solved by technology

[0002] At present, the domestic automobile industry has not made great progress in the research on variable valve timing (VVT) of gasoline engines, mainly due to the performance requirements of key components and test theories and methods, especially the performance near the limit conditions There has been no major breakthrough in simulating the extreme working environment. The research on the performance test of variable valve timing (VVT) components of gasoline engines, variable hydraulic vane wheel and OCV valve is mainly based on theory, while for high speed, high temperature and strong torque It is difficult to test the variable valve timing (VVT) performance parameters of gasoline engines under extreme conditions, especially in terms of test control accuracy and test repeatability, which are difficult to fully guarantee. In addition, due to the large number of test parameters, there is a complex test process. , the degree of automation is not high, the labor workload of operators is large, and the accuracy of manual detection operation is low, etc.

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