Control device of flexible fuel engine

A flexible fuel and control device technology, applied in engine control, combustion engine, fuel injection control, etc., to achieve the effect of simple structure and convenient maintenance

Inactive Publication Date: 2008-01-23
方林焱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for existing control devices to accurately control gasoline, alcohols, and mixed fuels with any ratio of gasoline and alcohols.

Method used

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  • Control device of flexible fuel engine
  • Control device of flexible fuel engine
  • Control device of flexible fuel engine

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Experimental program
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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] The circuit configuration of the flexible fuel engine control device will be described with reference to FIG. 1 .

[0017] The original electronic control unit, fuel injector, start switch and oxygen sensor of the EFI engine are respectively used as the main ECU1, fuel injector 3, start switch 4 and oxygen sensor 6. On this basis, there are auxiliary ECU2 and Temperature control switch 5.

[0018] The main ECU1 outputs other control signals for controlling injection, ignition, etc. under the assumption of a gasoline state based on input signals from various sensors of the engine. The configuration and operating principle of the main ECU 1 are not changed from those of the general injection engine ECU, so the description thereof will be omitted here.

[0019] Other control signals such as ignition are input to the respective actuators.

[0020]...

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PUM

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Abstract

A flexible controller for a fuel engine is provided, which comprises a main ECU, an auxiliary ECU, a fuel injector, a starting switch, a temperature control switch, and an oxygen sensor. Wherein, the injection signals output by the main ECU based on the input signals from different sensors of the engine for controlling are all input into the auxiliary ECU supposing gasoline is used; the auxiliary ECU corrects the injection signals from the main ECU into injection signals that can be used both for controlling gasoline, alcohol and mixture of them in any proportion based on the excitation signals from the start switch, the temperature signals from the temperature-controlling switch on the cylinder block of the engine and the voltage signals from the oxygen sensor; and the auxiliary ECU also sends the corrected injection signals into the fuel injector.

Description

technical field [0001] The invention relates to an engine control device, in particular to a flexible fuel engine control device capable of arbitrarily using gasoline, alcohols, and a mixture of gasoline and alcohols in any ratio, and belongs to the engine application of various fuels, flexible fuels, flexible fuels, and free fuels technology field. Background technique [0002] Alcohol fuel such as coal-based methanol and bioethanol is a kind of liquid engine fuel that can replace gasoline. Because its calorific value is greatly different from gasoline, it is generally necessary to increase the injection time of the engine injector, that is, to increase the proportion of the injection pulse signal. The method of empty ratio is used to meet the normal operation of ordinary gasoline engines. [0003] For the engine that can only use gasoline fuel, there are usually two ways to make it suitable for gasoline and specific proportion of alcohol fuel: one is to set up a computer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/06F02D41/26F02D41/40
CPCY02T10/36Y02T10/30
Inventor 方林焱王宏伟阎文兵续海峰
Owner 方林焱
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