A device and method for measuring the working duration of a gas ejector

By using a laser module and a current detection module in the gas injector and combining it with an oscilloscope to display the signal, the problem of low gas injection duration measurement accuracy is solved, accurate measurement of the gas injector working duration is achieved, the operating process is simplified and costs are reduced.

CN119246038BActive Publication Date: 2025-09-30FAW JIEFANG AUTOMOTIVE CO
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Patent Information

Application Number
CN202411393947.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-08
Publication Date
2025-09-30
Estimated Expiration
2044-10-08

AI Technical Summary

Technical Problem

In the prior art, the measurement accuracy of the gas injection duration of the gas injector is low and is affected by the pressure relief speed of the pressure relief valve, resulting in inaccurate measurement results.

Method used

A laser module is used to emit light to the control valve seat during the gas injection process, and the displacement signal of the control valve seat is determined based on the reflected light to measure the working duration of the gas injector. Combined with current detection and oscilloscope display signal, accurate measurement is achieved.

Benefits of technology

Accurate measurement of the working duration of the gas injector is achieved through optical principles, avoiding the problem of low measurement accuracy in the existing technology, while simplifying the operation process and reducing manpower and time costs.

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Abstract

The present invention discloses a device and method for measuring the operating duration of a gas injector. The device comprises a gas delivery module, a gas injector, and a laser module. The gas injector comprises a control valve seat and a flow channel valve body. The gas delivery module is configured to deliver gas through a flow channel within the flow channel valve body when the control valve seat is open, and to stop delivering gas when the control valve seat is closed. The laser module is configured to emit light onto the control valve seat as gas is ejected outward through the flow channel, and to determine the operating duration by determining a displacement signal based on the reflected light. This solution enables precise measurement of the operating duration of a gas injector.
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