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Engine-driven vehicle with transmission

A technology for motor vehicles, transmissions, applied to components with teeth, measuring devices, transmission control, etc., to achieve the effect of avoiding insufficient driving force, high fuel economy, and good estimation

Inactive Publication Date: 2007-08-29
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A disadvantage of the prior art is that the transmission is not always selected in the most suitable gear, e.g. for the first shift after starting and, especially when the vehicle is stationary and the load on the vehicle changes in this way

Method used

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  • Engine-driven vehicle with transmission
  • Engine-driven vehicle with transmission
  • Engine-driven vehicle with transmission

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0099] According to this example, m(1), m(2) and m(3) shown in Fig. 3c are used. That is, the first three calculated vehicle masses for the lowest gear of the transmission are used.

[0100] average Calculated in the second control unit 45, where

[0101] m ‾ = Σ i = 1 3 m ( i ) / 3 - - - ( 9 )

example 2

[0103] Following this example, the first three calculated vehicle masses for the lowest gear of the transmission (from table G1) are used, and the next three calculated values ​​for the other vehicle gears are also used, namely m(7), m(8) and m(9), which are stored in table G2.

[0104] average Calculated in the second control unit 45, where

[0105] m ‾ [ G 1 ] Σ i = 1 3 m ( i ) + [ G 2 ] Σ i = 7 9 m ( ...

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PUM

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Abstract

The invention relates to an engine-driven vehicle comprising at least one engine (10), and control elements (45; 48) designed to control a transmission (90) that can be driven by the engine, the control elements being designed to receive a first signal transmitted from a first sensor (115) and containing information on the gradient of the vehicle running surface, and to receive a second signal transmitted from a second sensor (110; 113) and containing information on the torque, and to receive a third signal transmitted from a third sensor (114) and containing information on the vehicle acceleration, in which the control elements are further designed to calculate the mass (m(i); m ) as a function of the first, second and third signals, and to control the transmission as a function of the vehicle mass calculated.

Description

technical field [0001] The invention relates to a motor vehicle comprising an engine and control elements designed to control a transmission that can be driven by the engine. [0002] The invention also relates to a method for calculating the mass of a motor vehicle. [0003] The invention also relates to a computer program for carrying out the method. Background technique [0004] In vehicles with automatically operated planetary gear-based transmissions with torque converters or semi-automatically shifted transmissions, it is very important that, according to certain given criteria, such as for example low fuel consumption or high Average speed, using as accurate an estimate of vehicle mass as possible to provide optimal shifting patterns. [0005] A disadvantage of the prior art is that the transmission is not always selected in the most suitable gear, e.g. for the first shift after starting and, especially when the vehicle is stationary and the load on the vehicle chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02G01G19/08F16HF16H59/14F16H59/48F16H59/52F16H59/66
CPCF16H61/0213G01G19/086F16H59/48F16H59/66F16H59/52F16H59/14
Inventor 安德斯·埃里克森安德斯·林格伦马格纳斯·林道
Owner VOLVO LASTVAGNAR AB
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