Method and system for controlling double-fuel engine

A dual-fuel engine and control method technology, applied in engine control, machine/engine, mechanical equipment, etc., 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: 2014-09-10
GREAT WALL MOTOR CO LTD
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  • Abstract
  • Description
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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

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  • Method and system for controlling double-fuel engine
  • Method and system for controlling double-fuel engine
  • Method and system for controlling double-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 invention provides a method for controlling a double-fuel engine. The method includes acquiring needed basic gasoline quantity according to needed torque of a vehicle; correcting the basic gasoline quantity according to air incoming temperature of the engine, water temperature of the engine and excess air coefficient lambda value to acquire gasoline injection quantity; acquiring diesel pilot-injection quantity according to the gasoline injection quantity; correcting the diesel pilot-injection quantity to acquire final diesel pilot-injection quantity; acquiring diesel main-injection quantity according to the gasoline injection quantity, the final diesel pilot-injection quantity and the needed torque; correcting the diesel main-injection quantity to acquire final diesel main-injection quantity. The method has the advantage that oil consumption and emission of the engine can be lowered. The invention further provides a system for controlling the double-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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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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