Dynamometer-based anti-drag starting device and its anti-drag control method

Abstract

The invention discloses a dynamometer-based anti-drag starting device and a control method thereof. The device comprises a dynamometer (1), a driven wheel (6), a belt (7), a driving wheel (8), and a motor (9). ), frequency converter (10), main shaft (21), anti-drag clutch (3), starting clutch (4), overrunning clutch (5) and electromagnetic control components; the overrunning clutch includes a coaxially connected outer ring (51) and an inner The ring (55) and the wedge (53) that rotates between the inner and outer rings; the dynamometer, the anti-drag clutch, the main shaft, the overrunning clutch and the starting clutch form an anti-drag transmission shaft between the engine (20) and the driven wheel; the motor is driven by The structure reverses the dragging of the engine through the reverse dragging drive shaft. The invention can realize the non-firing reverse drag and ignition starting functions of the motor to the engine by controlling the rotational speed of the motor, and can realize engine tests such as noise vibration test and mechanical loss power test without an electric dynamometer, thereby reducing the test cost.

Description

technical field [0001] The present invention relates to an engine test device and method, in particular to a dynamometer-based anti-drag starting device and a control method thereof. Background technique [0002] The engine is the core component of an automobile. During the development and design stage, a large number of tests need to be carried out on the engine, such as engine mechanical loss power test, engine anti-drag noise and vibration test, etc., to ensure that the performance of the engine meets the design requirements. [0003] During the engine test process, a dynamometer must be used to measure the output torque of the engine, and the output power of the engine can be obtained by calculating the output torque and rotational speed to test whether the engine meets the design requirements. At present, commonly used dynamometers include: electric dynamometer, eddy current dynamometer, and hydraulic dynamometer. Among them, after the electric dynamometer is connected...

AI Technical Summary

Problems solved by technology

According to the "GBT 18297-2001 Automobile Engine Performance Test Method" and other standards for engine performance test regulations, in the mechanical loss power test of the engine, because the eddy current dynamometer and the hydraulic dynamometer do not have the anti-drag function, it is impossible to carry out this test. This test can only be carried out on the electric dynamometer

In the noise and vibration test, there is also a demand for the dynamometer to back-drag the engine. This test cannot be carried out on the eddy current dynamometer and hydraulic dynamometer, which greatly increases the cost of the engine test.

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