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Dual-fuel control method and system for vehicle and vehicle

A dual-fuel system and control method technology, applied in fuel injection control, electrical control, engine control and other directions, can solve the problems of incomplete consideration, too simple switching strategy, and the engine cannot run normally, and achieve the effect of ensuring stable operation.

Pending Publication Date: 2021-03-19
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the first aspect of the present invention is to provide a dual-fuel control method for vehicles to solve the technical problem that the switching strategy of the dual-fuel control system in the prior art is too simple and not considered comprehensively, which will cause the engine to fail to run normally

Method used

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  • Dual-fuel control method and system for vehicle and vehicle
  • Dual-fuel control method and system for vehicle and vehicle
  • Dual-fuel control method and system for vehicle and vehicle

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote 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 and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] figure 1 is a schematic flowchart of a dual-fuel control method according to an embodiment of the present invention. Such as figure 1 As shown, in a specific embodiment, the dual-fuel control method may generally include the following steps:

[0037] S100, acquiring the vehicle's fault information indicating whether the dual-fuel system is faulty and the operating parameter information of the engine system;

[0038] S200. Control one fuel system in the dual fuel system to supply power to the engine according ...

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Abstract

The invention provides a dual-fuel control method and system for a vehicle and the vehicle, and relates to the field of vehicle engines. The method comprises the steps: obtaining fault information used for indicating whether the dual-fuel system breaks down and operation parameter information of an engine system of the vehicle, then controlling a fuel system in the dual-fuel system to supply energy to an engine according to the fault information and the operation parameter information, and controlling mutual switching between the dual-fuel system so that the engine can operate normally. According to the method and system, and the vehicle, the operation parameter information of the engine system and the fault information of the dual-fuel system are considered so that the consideration is more comprehensive, and stable operation of the engine can be guaranteed.

Description

technical field [0001] The invention relates to the field of vehicle engines, in particular to a dual-fuel control method for vehicles, a control system and the vehicle. Background technique [0002] The heat value of methanol is 45% of that of gasoline, the theoretical air-fuel ratio is about 44%, the octane number is higher than that of gasoline and ethanol, and it has good anti-knock performance. Therefore, methanol can reduce the combustion chamber temperature, increase the engine charge coefficient, and reduce NO x emission. However, the latent heat of vaporization of methanol is 3.57 times that of gasoline, its volatility is not as good as that of gasoline, its atomization effect is poor, and it is highly toxic and prone to harmful substances such as methanol and formaldehyde due to insufficient combustion. Methanol vehicles usually use gasoline and methanol as fuels to complement each other. In order to give full play to the economic advantages of methanol and avoid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/22F02D19/06F02D19/08
CPCF02D41/0025F02D41/22F02D19/081F02D19/0623F02D2041/224Y02T10/30Y02T10/40
Inventor 韩翔王克险李呈剑万冬王荫
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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