Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for controlling a speed surge of an internal combustion engine of a moving vehicle during a gearbox ratio change

An engine speed, gearbox technology, applied in electrical control, engine control, machine/engine, etc., to solve problems such as engine speed surge

Active Publication Date: 2016-01-13
VTESCO TECH GMBH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Torque control in the step-down phase may cause engine speed surges during gearbox ratio changes between the disengaged and engaged states, from engine disengagement until the end of the momentary step-down phase

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling a speed surge of an internal combustion engine of a moving vehicle during a gearbox ratio change
  • Method for controlling a speed surge of an internal combustion engine of a moving vehicle during a gearbox ratio change
  • Method for controlling a speed surge of an internal combustion engine of a moving vehicle during a gearbox ratio change

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] according to figure 1 The flowchart of the diagram illustrates an example of a method for controlling the speed surge of an internal combustion engine of a moving vehicle during a speed ratio change of a manual gearbox placed in a In a drive train in which power is transmitted from the drive wheels of a vehicle comprising an engine control unit 100 or ECU, means for determining the crankshaft speed (not illustrated), an accelerator (not illustrated) allowing the driver to adjust his engine torque demand ), means for determining the position of the accelerator (not illustrated). The vehicle is not provided with a clutch sensor dedicated to detecting the disconnected or engaged state of the engine.

[0034]The engine control unit 100 is provided with an instantaneous progressive torque reduction phase strategy 60, which is particularly during a driver's zero torque request or when lifting the foot (that is to say, corresponding to the Accelerator rest position caused by...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Method for controlling speed surge of an internal combustion engine of a moving vehicle during a ratio change of a manual gearbox, the vehicle including an engine control unit with a transient progressive torque reduction phase activated when the driver requests zero torque or when the foot is raised, the engine control unit: detects the raised foot and activates the transient progressive torque reduction phase; records engine speed and determines the gearbox ratio engaged when the foot is raised; determines, a maximum permissible engine speed (Nmax) which is greater than the recorded speed (Nlvp) of the raised foot, in accordance with the engine speed recorded and the engaged gearbox ratio; monitors the current speed (Nc) so that if: Nc>Nmax, a stop is initiated with immediate effect of the transient progressive torque reduction phase, Nc!<=Nmax, the transient progressive torque reduction phase is maintained.

Description

technical field [0001] The invention relates to a method for controlling the speed surge of an internal combustion engine of a moving vehicle during a ratio change of a manual gearbox placed in a In the transmission chain through which the drive wheels transmit power, said vehicle comprises an engine control unit, means for determining the speed of the crankshaft, an accelerator allowing the driver to adjust his demand in terms of engine torque, means for determining the position of the accelerator, the engine The control unit has an instantaneous progressive torque reduction phase which is activated when the driver requests zero torque, or when the foot is lifted or the accelerator is fully lifted, as defined below. Background technique [0002] As is typical in conventional motor vehicles, during a gear ratio change, the driver first lifts his foot off the accelerator pedal, as soon as the accelerator has reached its rest or zero torque demand position (corresponding to fu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02F02D41/30
CPCF02D41/023F02D11/105F02D41/0205F02D41/0225F02D41/045F02D41/12F02D41/123F02D2200/101F02D2200/602
Inventor D.克雷纳
Owner VTESCO TECH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com