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Control device and control method for vehicle

A vehicle control device and vehicle control technology, applied in engine control, clutch, machine/engine, etc., can solve problems such as engine flameout, fuel efficiency deterioration, and insufficient engine output torque, so as to prevent flameout, suppress heat generation, and suppress Effects of Clutch Performance Deterioration

Inactive Publication Date: 2007-05-09
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, when the clutch is controlled to be engaged due to the temperature rise in the clutch, the output torque of the engine becomes insufficient, which may cause the engine to stall
Fuel efficiency can be worsened if engine output is increased unnecessarily to prevent engine stalling

Method used

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  • Control device and control method for vehicle
  • Control device and control method for vehicle
  • Control device and control method for vehicle

Examples

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Embodiment Construction

[0029] Hereinafter, embodiments of the present invention are described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals and have the same names and functions. Therefore, detailed descriptions of these same parts will not be repeated.

[0030] Referring to FIG. 1 , a vehicle having a vehicle control device according to the present invention will be described. The vehicle travels by driving force generated by an internal combustion engine (hereinafter, referred to as an engine) 100 , which is transmitted to driving wheels 404 through a clutch 200 , a transmission 300 , a differential device 400 and a propeller shaft 402 . The engine 100 , the clutch 200 and the transmission 300 are controlled by an electronic control unit (ECU) 500 . The vehicle control device according to the present invention is executed by, for example, a program executed at ECU 500 .

[0031] The engine 100 is a gasoline engine. Diese...

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Abstract

An ECU executes a program including the steps of sensing a slope of a lane if an estimated temperature T of a clutch is higher than a predetermined threshold value (1) (YES in S100) (S102), calculating running resistance and friction resistance (S104), performing torque demand control (S106), controlling the clutch such that the clutch is engaged (S108), and performing normal control if the estimated temperature T of the clutch is lower than a predetermined threshold value (2) (YES in S110) (S112).

Description

[0001] This non-provisional application is based on Japanese Patent Application No. 2005-321232 filed in the Japan Patent Office on November 4, 2005, the entire contents of which are hereby incorporated by reference. technical field [0002] The invention relates to a vehicle control device and a control method, in particular to the control of a clutch and an internal combustion engine when the vehicle is running at a low speed. Background technique [0003] In a traditionally implemented automatic control, a clutch provided between the engine and the transmission is actuated by an actuator or the like. When a vehicle equipped with such a clutch starts to move or travels at a low speed, the clutch is controlled to be half-engaged to prevent the engine from stalling. However, if the vehicle is repeatedly started and stopped or maintained at a low vehicle speed, thereby continuing the semi-engaged state, heat is generated at the joint portion between the input shaft and the ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/02B60W30/18B60W10/04F02D29/00F16D48/02
CPCF16D2500/3127F16D2500/3067F16D2500/7044F16D2500/30405F16D2500/70247F16D2500/1045F16D2500/30806F16D2500/10412F16D48/08F16D2500/50883
Inventor 西泽纯
Owner TOYOTA JIDOSHA KK
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