Between-cylinder balance control method and system for dual-fuel engine and automobile

A dual-fuel engine and inter-cylinder balance technology, which is applied in the direction of engine control, combustion engine, internal combustion piston engine, etc., can solve the problems of no control method, deviation compensation, etc., and achieve the effect of alleviating torque instability

Active Publication Date: 2015-11-04
GREAT WALL MOTOR CO LTD
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Problems solved by technology

[0003] Most of the current inter-cylinder balance systems of engines only do cylinder-by-cylinder balance calculations for diesel engines. In this case, the deviation compensation of the diesel fuel injection quantity is only based on the crankshaft speed signal
However, there is no specific control method for the inter-cylinder balance system of dual-fuel engines.

Method used

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  • Between-cylinder balance control method and system for dual-fuel engine and automobile
  • Between-cylinder balance control method and system for dual-fuel engine and automobile
  • Between-cylinder balance control method and system for dual-fuel engine and automobile

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Embodiment Construction

[0028] 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.

[0029] The inter-cylinder balance control method, system and vehicle of a dual-fuel engine according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0030] Before describing the inter-cylinder balance control method of a dual-fuel engine according to an embodiment of the present invention, firstly, the structure of a dual-fuel engine, such as a gasoline premixed diesel pilot ignition engine, will be described. Such as Figure 4 As shown, the gasoline premixed diesel pilot ...

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Abstract

The invention provides a between-cylinder balance control method and system for a dual-fuel engine and an automobile. The method includes the following steps that an accelerator pedal signal is obtained; the load state of the engine is judged according to the accelerator pedal signal; if the engine is in the first load state, the oil amount differences of oil amounts in multiple cylinders of the engine are calculated according to crankshaft rotating speed signals of the engine; and the oil amounts in the multiple cylinders are balanced according to the oil amount differences of the oil amounts in the multiple cylinders. By means of the control method, the oil amounts in all the cylinders can be regulated in real time according to the change situations of the rotating speed of a crankshaft so that the oil amounts can be balanced, and the situations of rotating speed fluctuation and torque instability which are caused by the unbalanced oil injection amounts of all the cylinders of the engine are eliminated.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a dual-fuel engine inter-cylinder balance control method and system and an automobile with the system. Background technique [0002] Dual fuel engines generally have multiple cylinders. For engines with gasoline premixed diesel ignition, when gasoline is first introduced, due to the small fuel injection volume and the influence of the inherent characteristics of gasoline injectors, the actual fuel injection into each cylinder is quite different, resulting in engine speed fluctuations and torque fluctuations. Stablize. Therefore, it is necessary to balance the amount of oil in each cylinder. [0003] Most of the current engine inter-cylinder balance systems only perform cylinder-by-cylinder balance calculations for diesel engines. In this case, the deviation compensation of the diesel fuel injection quantity is only performed according to the crankshaft speed s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/06
CPCY02T10/30
Inventor 饶良武赖海鹏陈利明郭威崔亚彬马帅营胡佳明张宝东鲁志远豆刚王云超
Owner GREAT WALL MOTOR CO LTD
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