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Method and system for temperature control of vehicle engine

A temperature control system, engine technology, applied in engine control, engine components, machines/engines, etc., can solve problems such as difficulty in cold start

Active Publication Date: 2019-11-26
ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For engines equipped with superchargers or equipped with supercharging and exhaust gas recirculation (EGR), the cold start of injection engines that use alcohols such as methanol or ethanol instead is more difficult

Method used

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  • Method and system for temperature control of vehicle engine
  • Method and system for temperature control of vehicle engine
  • Method and system for temperature control of vehicle engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] figure 1 is a schematic logic diagram of the temperature control method according to the present invention; combinedfigure 1 To illustrate, the present invention provides a method for controlling the temperature of a vehicle engine. The method can be used for cold start and / or shutdown cooling of the engine. Wherein, the vehicle engine is an air port injection engine, and is equipped with a supercharger or / and is provided with functions of supercharging and exhaust gas recirculation. It should be understood that "or / and" means "or" or "and", for example, "cold start or / and shutdown cooling" refers to cold startup or shutdown cooling, or cold startup and shutdown cooling. This will not be explained below.

[0057] Specifically, the methods include:

[0058] S100 (step 1) acquire engine information. The engine information includes at least the temperature in the engine. In this step, the engine controller or the ECU of the vehicle may acquire engine information throu...

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Abstract

The invention provides a temperature control method and system for a vehicle engine, and relates to engines of vehicles. The method includes the steps of 100, engine information is obtained, and the engine information at least includes temperature in the engine; 200, the temperature of gas is adjusted based on the engine information before the gas is injected to the head of a fuel injector of theengine, and a case that the gas temperature is not changed is at least included; 300, the gas is injected and flow of the gas is adjusted based on the engine information, and a case that the flow of the gas remain unchanged is at least included; 400, the engine information is obtained again or / and the injecting time for the gas in the step 300 is timed; and 500, the fact that the engine information or / and the injecting time of the gas reaches / reach corresponding predetermined requirements is obtained and known, and the gas is stopped injecting to the head of the fuel injector of the engine. Itis ensured that the engine is smoothly cool-started as far as possible, so that the engine is cooled as quickly as possible after being stopped, and it is ensured that the fuel injector of the enginecan work normally as far as possible.

Description

technical field [0001] The invention relates to a vehicle engine, in particular to a temperature control method and system for a vehicle engine. Background technique [0002] A gasoline injection engine is an engine with a gasoline injection system, that is, an airway injection engine, relative to a carburetor gasoline engine. Due to the easy volatilization of gasoline, it is convenient to form a homogeneous combustible mixture outside the cylinder, so the carburetor supply method installed on the intake manifold has been adopted for a long time. Since this kind of fuel supply system cannot accurately control the air-fuel ratio of the mixer according to different working conditions, it has been replaced by electronically controlled gasoline injection. Gasoline injection methods can be divided into three types: multi-point injection (MFI), multi-point injection (MFI), manifold or central single-point injection (SPI) and direct injection (GDI) according to the installation po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30F02D41/40F02M53/08F02M59/20
Inventor 李书福蔡文远陈冲张甲乐苏茂辉
Owner ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD
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