Low-temperature cold starting device of methanol fuel engine

An engine and cold start technology, which is applied in the direction of combustion engine, internal combustion piston engine, engine control, etc., to achieve the effects of popularization of application and distribution, wide applicability, and low price

Active Publication Date: 2017-01-04
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] One purpose of the present invention is to apply natural gas technology to methanol engines to solve the problem of difficult cold start of methanol fuel engines at low temperatures in a stable and efficient manner

Method used

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  • Low-temperature cold starting device of methanol fuel engine

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Embodiment Construction

[0021] figure 1 It is a schematic diagram of the composition and structure of a methanol fuel engine low-temperature cold start device according to an embodiment of the present invention. Such as figure 1 As shown, the low temperature cold starting device for methanol fuel engine provided by the present invention includes: engine body 12, methanol oil supply system 17, natural gas supply system and engine management system 13, engine management system 13 according to the water temperature of engine body 12 Control the working mode judgment and / or switching between the methanol oil supply system 17 and the natural gas supply system. The engine management system 13 realizes switching of working modes by controlling the opening and closing of the fuel delivery lines of the methanol oil supply system 17 and the natural gas supply system.

[0022] Specifically, the natural gas supply system includes: a natural gas storage device, a natural gas delivery device, and a natural gas i...

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Abstract

The invention provides a low-temperature cold starting device of a methanol fuel engine and belongs to the field of automobile engines. The low-temperature cold starting device of the methanol fuel engine comprises an engine body, a methanol oil supply system, a natural gas supply system and an engine management system, wherein the engine management system controls working mode judgment and / or switching between the methanol oil supply system and the natural gas supply system according to the water temperature of the engine body. The low-temperature cold starting device of the methanol fuel engine, provided by the invention, can stably and effectively solve the problem that the methanol fuel engine is difficult in low-temperature cold starting, reduces the use cost, reduces the environmental pollution by adopting the natural gas fuel, and solves the crisis that energy sources are insufficient at present.

Description

technical field [0001] The invention relates to the field of a dual-purpose fuel automobile engine, in particular to a low-temperature cold starting device for a methanol fuel engine. Background technique [0002] Along with the dwindling of petroleum resources, the use of engines fueled by methanol and ethanol in automobiles is also increasing. Due to the large latent heat of vaporization of methanol, a large amount of heat is absorbed during the vaporization process. If the ambient temperature is too low, the atomization of methanol fuel will be poor, resulting in difficulty in cold starting. Generally, when the ambient temperature is lower than 5°C, it is difficult to start the engine from a cold state. In the alpine region of minus 30°C, without an auxiliary device, it is impossible to start a cold engine at all. [0003] At present, several existing solutions include: 1. Starting from the fuel itself, using a mixed fuel with a certain ratio of methanol and gasoline, s...

Claims

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Application Information

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IPC IPC(8): F02D19/06
CPCF02D19/0615F02D2200/021Y02T10/30
Inventor 吕守鹏邓小明
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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