Novel engine test bed electronic throttle signal simulator

Abstract

The invention provides a novel engine test bed electronic throttle signal simulator and relates to the technical field of automobile engine detection experiments. The novel engine test bed electronic throttle signal simulator aims at solving the problem that an existing old engine test bed is not provided with an electronic throttle signal interface, the function of the electronic throttle signal interface can be achieved by contacting with a test bed supplier to update a whole system and consuming high cost and accordingly lots of old test beds on service cannot meet the requirement for engine tests controlled by electronic throttles. The signal output end of an engine test bed mechanical throttle control system is connected with the signal input end of a switching amplifier with high common mode rejection ratio of the mechanical throttle control system, the signal output end of the switching amplifier with the high common mode rejection ratio outputs a signal to an engine ECU through a voltage operation adjusting circuit, a voltage isolation module circuit and a second group of driving voltage generating circuits. The novel engine test bed electronic throttle signal simulator is applicable to modification of the old engine test beds, achieves an electronic throttle signal output function and has high common mode rejection ratio and fault-tolerant capability and very low non-linear voltage.

Description

technical field [0001] The invention relates to the technical field of automobile engine detection experiments. Background technique [0002] Due to the extensive use of electronic accelerator control in vehicle systems in recent years, the new systems of engine test bench suppliers all have electronic accelerator pedal signal interfaces, but for some existing old engine test benches, there is no electronic accelerator signal interface. There is a need to ask the bench supplier to upgrade the entire system, and the cost is high to realize this function, making some old benches still in service unable to meet the needs of electronic throttle control engine tests. Contents of the invention [0003] The purpose of the present invention is to provide a novel engine test bench electronic throttle signal simulator, the present invention is to overcome the existing old engine test bench, does not have the electronic throttle signal interface, there is a need to ask the bench supp...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a novel engine test bench electronic throttle signal simulator, the present invention is to overcome the existing old engine test bench, does not have the electronic throttle signal interface, there is a need to ask the bench supplier to complete System upgrades require high costs to realize this function, which makes some old benches still in service unable to meet the needs of electronic throttle control engine tests

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