Title:
AIR-FUEL RATIO CALIBRATION METHOD AND CALIBRATION SYSTEM OF HIGH-POWER GAS ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/202253
Kind Code:
A1
Abstract:
An air-fuel ratio calibration method and calibration system of a high-power gas engine. The calibration method comprises: controlling a gas engine to operate under a calibration working condition; acquiring the gas flow, the air flow and the real-time gas leakage flow, and making the gas leakage flow be equal to the real-time gas leakage flow; calculating an air-fuel ratio according to the gas flow and the air flow; marking the gas leakage flow and the air-fuel ratio in a coordinate system taking the gas leakage flow and the air-fuel ratio as coordinates; when a relation graph of the gas leakage flow and the air-fuel ratio is formed in the coordinate system, taking the relation graph as a map graph of the gas leakage flow and the air-fuel ratio under the calibration working condition; and when the relation graph of the gas leakage flow and the air-fuel ratio cannot be formed in the coordinate system, after the calibration working condition is kept or changed, returning to execute the step of controlling the gas engine to operate under the calibration working condition.
Inventors:
KONG LONG (CN)
XU QINGXIANG (CN)
XU QINGXIANG (CN)
Application Number:
PCT/CN2023/080448
Publication Date:
October 26, 2023
Filing Date:
March 09, 2023
Export Citation:
Assignee:
WEICHAI POWER CO LTD (CN)
International Classes:
G01M15/00
Foreign References:
| CN114720133A | 2022-07-08 | |||
| CN110671218A | 2020-01-10 | |||
| CN112081677A | 2020-12-15 | |||
| JPH05163993A | 1993-06-29 | |||
| JPH06288265A | 1994-10-11 | |||
| JPH0868353A | 1996-03-12 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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