Control method and system for dual-fuel engine

A dual-fuel engine and control method technology, applied in engine control, machine/engine, mechanical equipment and other directions, can solve the problems of poor fuel economy and high exhaust pollutant emissions, and achieve the effects of high fuel economy and low fuel consumption

Active Publication Date: 2016-08-24
GREAT WALL MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Traditional engines are mainly divided into gasoline engines and diesel engines. Gasoline engines have better emissions, but their fuel economy is determined by their ignition methods. Diesel engines have better fuel economy, but correspondingly higher emissions of exhaust pollutants such as NOX

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  • Control method and system for dual-fuel engine
  • Control method and system for dual-fuel engine
  • Control method and system for dual-fuel engine

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0027] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The present invention proposes a control method for a dual-fuel engine, comprising: obtaining the required basic quantity of gasoline according to the required torque of the vehicle; correcting the basic quantity of gasoline according to the intake air temperature of the engine, the engine water temperature and the excess air coefficient λ value to obtain Gasoline injection quantity; Diesel pre-injection quantity is obtained according to gasoline injection quantity; Diesel pre-injection quantity is corrected to obtain final diesel pre-injection quantity; Diesel main injection quantity is obtained according to gasoline injection quantity, final diesel pre-injection quantity and required torque Fuel amount; the main injection amount of diesel is corrected to obtain the final main injection amount of diesel. The control method of the dual-fuel engine according to the embodiment of the present invention has the advantage of reducing the fuel consumption and emission of the engine. The invention also proposes a control system of the dual-fuel engine.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control method and system for a dual-fuel engine. Background technique [0002] As environmental problems and energy problems become more and more severe, engines are the main source of consumption of petroleum energy, and engines are currently widely used power machinery, which are difficult to be replaced in a short period of time. Therefore, how to reduce the fuel consumption of engines and reduce the Pollutant discharge is an urgent problem to be solved. [0003] Traditional engines are mainly divided into gasoline engines and diesel engines. Gasoline engines have better emissions, but their fuel economy is poor due to their ignition methods. Diesel engines have better fuel economy, but correspondingly higher emissions of exhaust pollutants such as NOX. Therefore, a dual-fuel engine appears in the related art. The dual-fuel engine injects combustible gases such as gaso...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D19/08
Inventor 崔亚彬赵伟博刘秀会卢丰翥
Owner GREAT WALL MOTOR CO LTD
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