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

Method for controlling driven manual or automatic gearbox

A technology of gearbox and transmission ratio, which is used in transmission control, road vehicle drive control system, control device, etc.

Active Publication Date: 2015-09-23
PEZHO SITROEN AUTOMOBILS SA
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the engine speed will approach the maximum speed very quickly, and the protection of the engine will force the gear ratio to be increased

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 driven manual or automatic gearbox
  • Method for controlling driven manual or automatic gearbox
  • Method for controlling driven manual or automatic gearbox

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The graph below the sole figure shows the gradient of the road covered by the vehicle over a period of 500 seconds. The time interval was chosen by chance, it being understood that the time interval may vary. During the first 100 seconds, the slope continues to rise. The slope then remains constant for 100 seconds and then slowly decreases until the end of the time interval.

[0013] The driver of the vehicle activates the speed regulator at the same time as starting the trip. Fix the speed to the set value, which is 130km / h.

[0014] The driver of the vehicle depresses the gas pedal, which causes the automatic transmission to change gear ratios in order to maintain the engine speed within a predetermined range.

[0015] After about 50 seconds, the speed setpoint fixed by the driver is reached, however, the gradient then rises all the way up and the engine block (GMP) is no longer able to maintain the speed setpoint. The speed is reduced and the automatic transmissi...

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

The invention relates to a method for controlling a driven manual or automatic gearbox with a speed regulator pertaining to a vehicle traveling uphill, said method consisting in: regulating the speed to a nominal value set by the driver of the vehicle; acquiring the immediate values of the speed and the engine torque; estimating the resistive efforts based on values of speed and engine RPM; calculating, on the basis of the estimation of the resistive efforts and the maximum torque of the heat engine, the maximum vehicle acceleration possible in the gearbox gear ratio above the one that is engaged; and activating, or not, a vehicle speed limiting function (BVV) at a speed set value corresponding to the maximum speed for the heat engine according to whether the maximum acceleration possible in the higher gear ratio is negative or positive, respectively.

Description

technical field [0001] The invention relates to a method for controlling an automatic or manually operated transmission with a speed regulator provided on the vehicle when the vehicle is raised. Background technique [0002] A speed regulator of a motor vehicle is a system for automatically stabilizing the speed of a motor vehicle and / or fixing a maximum limit speed, called a speed limiter. The driver fixes the speed at the speed he wants to travel, and then the automation ensures that the speed thus limited is relayed and maintained. The system is well received over long distances and generally makes the best use of fuel consumption. The system also prevents inadvertent overspeed. Transmission control methods are known in the prior art which are able to follow a speed setpoint fixed by the driver. [0003] In some cases, such as a steep ascent or ascent with a heavy load, the vehicle cannot maintain speed. When the vehicle has decelerated sufficiently, a shift is made t...

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
IPC IPC(8): B60W30/14B60W10/11B60W50/06B60W50/08F16H61/16
CPCB60W50/087B60W50/06B60W2530/16B60W10/11F16H2061/163B60W2510/0638B60W30/143B60W2510/0657B60Y2300/143B60Y2300/146F16H61/10F16H63/50F16H2059/663F16H2061/0216F16H2061/0234
Inventor T·赫克斯韦勒
Owner PEZHO SITROEN AUTOMOBILS SA
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