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Engine Start Control System for Flexible Fuel Vehicles

An engine starting and flexible fuel technology, which can be used in engine starting, engine starting with an electric motor, engine components, etc., and can solve problems such as starting failure

Active Publication Date: 2017-05-10
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the engine is started before the fuel has reached the target temperature, it will cause a failure to start

Method used

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  • Engine Start Control System for Flexible Fuel Vehicles

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Embodiment Construction

[0021] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] An embodiment of the engine start control system used by the flexible fuel vehicle of the present invention, such as figure 1 As shown, including engine control unit (ECU), main relay, start control relay, starter, ignition switch;

[0023] The coil of the main relay is connected between the control pin PIN 1 of the main relay of the engine control unit and the battery positive;

[0024] The contacts of the main relay and the contacts of the starting control relay are connected in series between the storag...

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Abstract

The invention discloses an engine starting control system used for a flexible fuel vehicle. The engine starting control system used for the flexible fuel vehicle comprises an engine control unit, a main relay, a starting control relay and a starter; the coil of the main relay is connected between a main relay control pin of the engine control unit and the positive electrode of a storage battery; the contact of the main relay and the contact of the starting control relay are connected between the positive electrode of the storage battery and the starter in series; the contacts of the main relay and starting control relay are normally open contacts; the coil of the starting control relay is connected between a starter control pin and an ignition signal pin; when the engine control unit works, the main relay control pin is located at a low potential, when the engine control unit stops working, the main relay control pin is located at a high-resistance state; when the engine control unit works, if an oil rail locates at a heating state, the starter control pin is located at a high-resistance value state. The engine starting control system used for the flexible fuel vehicle is capable of forbidding the engine to work before finishing heating fuel oil so as to prevent starting failure.

Description

technical field [0001] The invention relates to new energy vehicle technology, in particular to an engine start control system used in flexible fuel vehicles. Background technique [0002] Flexible fuel vehicles (FFV: Flexible Fuel Vehicle) mainly refer to vehicles that can use pure gasoline, pure alcohol fuel, and mixed fuels of gasoline and alcohol fuel in different proportions. [0003] Flex-fuel vehicles use ethanol gasoline with an ethanol content of 22% to 100% in the same fuel tank. Due to the poor volatility of ethanol at low temperatures, under certain conditions (such as when the ethanol content in the fuel is above 85% and the ambient temperature is below 15 degrees), it is necessary to heat the fuel in the heating chamber of the fuel rail The engine cannot be started until the target temperature is reached. If the engine is started before the fuel has reached the target temperature, it will cause a failure to start. [0004] Some flex-fuel vehicles have a keyl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N11/08
CPCF02N11/08F02N11/087F02N11/101
Inventor 朱林森张旭洲宋振垒
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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