Biodiesel and butanol dual-fuel supply method and device

By adjusting the input ratio of butanol and biodiesel in a dual-fuel engine in real time, the problem of inability to balance power, economy and emissions in the prior art is solved, and the optimal performance balance of the engine under different operating conditions is achieved.

CN119737234APending Publication Date: 2025-04-01HARBIN INST OF TECH AT WEIHAI +1
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Patent Information

Application Number
CN202411527717.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

The existing dual fuel injection method cannot adjust the mixing ratio of the two fuels according to the engine operating conditions, resulting in the inability to balance the power, economy and emissions of the engine within the operating conditions range, and there is a problem of significant deterioration in performance.

Method used

By designing a dual fuel supply method and device for biodiesel and butanol in a dual fuel engine, the ECU controller is used to adjust the input ratio of butanol and biodiesel in real time according to the operating conditions of the engine to ensure that the cylinder is injected into the common rail tube after being fully mixed, forming a uniform combustible mixture.

Benefits of technology

The engine's power output, fuel economy and emission performance balance under different operating conditions is achieved, the engine's fuel economy and power is improved, and the engine's fuel economy and power is reduced.

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Abstract

The invention relates to the field of carbon neutralization fuel engines, in particular to a biodiesel and butanol dual-fuel supply method and device which is provided with a biodiesel side fuel supply mechanism, a butanol side fuel supply mechanism and a high-pressure common-rail fuel distribution mechanism. Wherein the biodiesel side fuel supply mechanism and the butanol side fuel supply mechanism are respectively connected with the high-pressure common-rail fuel distribution mechanism through supply pipelines, a biodiesel fuel tank is arranged in the biodiesel side fuel supply mechanism, and the biodiesel fuel tank is connected with a common-rail pipe in the high-pressure common-rail fuel distribution mechanism through a biodiesel supply pipeline. The biodiesel supply pipeline is provided with a rough filtration and oil-water separator, a biodiesel filter, a high-pressure pump, a one-way valve, a flow control valve, a density sensor and a temperature sensor, and the biodiesel fuel tank is further provided with an oil return pipe connected with the common rail pipe. Wherein the control signal ends of the flow control valve, the density sensor and the temperature sensor are respectively connected with the ECU controller.
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