Dual-fuel engine starting method, device, storage medium and system
By combining methanol and diesel injectors in a methanol engine and adjusting the fuel injection quantity according to the rate of change of temperature and speed, the problem of methanol engines being difficult to start at low temperatures has been solved, achieving fast and reliable engine starting and improved combustion efficiency.
CN120925979AActive Publication Date: 2025-11-11WEICHAI POWER CO LTD
Patent Information
- Application Number
- CN202511478753.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2045-10-16
Smart Images
Figure CN120925979A_ABST
Abstract
The invention provides a dual-fuel engine starting method and device, a storage medium and a system, an engine comprises a methanol injector and a diesel injector, the methanol injector is installed to an air inlet pipe of the engine, the diesel injector is installed to a cylinder cover of an engine air cylinder, and the method comprises the steps that an engine starting instruction is received and responded to; a plurality of temperature parameters are obtained, and the minimum temperature parameter in all the temperature parameters is determined; when the minimum temperature parameter is smaller than the preset temperature, a diesel injector is controlled to inject a preset first injection amount of diesel into an engine cylinder; and the rotating speed change rate of the engine rotating speed in the process from the static state to the first preset rotating speed is determined, the second injection amount of diesel oil and the third injection amount of methanol are determined according to the rotating speed change rate, and meanwhile the diesel oil injector and the methanol injector are controlled to inject, so that the engine is started. The problem that an engine is difficult to start at low temperature due to low methanol fuel vapor pressure and high latent heat is solved.
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Citation Information
Patent Citations
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