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Ethanol fuel cold start aiding method

A technology for ethanol fuel and cold start, which is applied in the directions of engine starting, fuel heat treatment device, engine motor starting, etc., can solve the problems of inability to atomize, difficulty in cold starting, etc., and achieves improved combustion effect, favorable starting exhaust pollution, The effect of increasing fuel diversity

Inactive Publication Date: 2018-07-27
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to its characteristics, ethanol fuel cannot be atomized when the external temperature is lower than 12°C, and when the atomization effect is poor between 12°C and 78°C, there is a problem of difficult cold start

Method used

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  • Ethanol fuel cold start aiding method

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0022] Cold start assistance includes engine control unit, heating control system, heating fuel rail or fuel injector, the engine control unit is used to judge whether heating of ethanol fuel is required according to various input parameters, and sends control to the heating control unit when heating is required The signal is controlled by the heating control unit to heat the fuel by heating the fuel rail (heating plugs are set on both sides of the fuel rail) or the fuel injector (heating the injector directly).

[0023] An auxiliary method for ethanol fuel cold start, comprising the following steps,

[0024] Step 1: The engine control unit judges whether an engine start signal is received;

[0025] Step 2: If the engine start signal is received, the engine control unit obtains the water t...

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Abstract

The invention discloses an ethanol fuel cold start aiding method, comprising the steps of I, judging, by an engine control unit, whether an engine start signal is received; II, if yes, acquiring, by the engine control unit, water temperature, intake temperature and ethanol concentration in ethanol fuel, and calculating a target fuel temperature required for engine start according to the water temperature, the intake temperature and the ethanol concentration; III, acquiring real-time temperature of the ethanol fuel, and judging, by the engine control unit, whether heating is required accordingto a target fuel temperature and the current real-time temperature of the ethanol fuel; if yes, sending, by the engine control unit, to a control signal to a heating device; heating the ethanol fuel to the target fuel temperature through the heating device. The ethanol fuel cold start aiding method has the advantages that better atomization of the ethanol fuel is achieved through an electric heating system to provide improved burning effect, the cold start difficulty is finally solved, and environmental pollution by cold engine emission is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile starting, in particular to an auxiliary method for cold starting of automobile ethanol fuel. Background technique [0002] 15 departments including the National Development and Reform Commission, the National Energy Administration, and the Ministry of Finance recently jointly issued the "Implementation Plan on Expanding the Production of Biofuel Ethanol and Promoting the Use of Ethanol Gasoline for Vehicles", specifying that by 2020, the use of ethanol for vehicles will be promoted nationwide Gasoline has basically achieved full coverage, a market-oriented operation mechanism has been initially established, an advanced bio-liquid fuel innovation system has been initially established, and the overall development of the biofuel ethanol industry has reached the international advanced level. [0003] Promoting the use of ethanol gasoline for vehicles is conducive to improving the ecological environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N19/04F02N11/08F02M31/16
CPCF02M31/16F02N11/08F02N19/04
Inventor 江峰
Owner CHERY AUTOMOBILE CO LTD
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