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Method for controlling a transmission, in particular of a motor vehicle

A technology for motor vehicles and transmissions, applied in control devices, vehicle components, auxiliary drive devices, etc., to solve problems such as heat engines no longer being able to provide drivers, vehicles losing power, etc.

Active Publication Date: 2018-06-08
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Regardless of the type of transmission used, when the vehicle is operating under conditions of high environmental constraints, such as high heat or high altitudes where the oxygen content of the air is low, the heat engine runs in the lower RPM range The torque required by the driver is no longer available, causing the vehicle to lose its power

Method used

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  • Method for controlling a transmission, in particular of a motor vehicle
  • Method for controlling a transmission, in particular of a motor vehicle
  • Method for controlling a transmission, in particular of a motor vehicle

Examples

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Embodiment Construction

[0025] figure 1 is a functional schematic diagram of a motor vehicle 10 comprising a heat engine 11 driving wheels 12 via a chain 13 of a transmission, for example of automatic type.

[0026] In this specification, the chain 13 of an automatic transmission corresponds to any transmission system in which the transmission ratio or gear ratio is determined by a computer and is automatically carried out by an actuator according to the change of the transmission ratio without the intervention of the driver. As conventional examples of chains 13 of automatic transmissions, mention may be made of automatic transmissions (BVA), automatic mechanical transmissions (BVMP), continuously variable transmissions (variateur) or continuously variable transmissions (CVT); where automatic transmissions include Torque converter and planetary gear train locked by hydraulic brakes to achieve various ratios; automatic mechanical transmission includes conventional but automatic clutches as well as tr...

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PUM

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Abstract

The invention primarily relates to a method for controlling a transmission, in particular of a motor vehicle (10), comprising: a heat engine (11) driving the wheels (12) of said vehicle (10) via a drive chain (13), and at least one accessory (14, 15) taking a torque from said heat engine (11), characterised in that in the case of a real situation with strong environmental constraints, said methodcomprises: a step of off-loading at least a part of the torque taken by said at least one accessory (14, 15), optionally followed by a step of compensating a loss of power suffered by said accessory (14, 15) during the off-loading step, by an increase in the power consumed by said accessory (14, 15).

Description

technical field [0001] The invention relates to a method of controlling a transmission, in particular of a motor vehicle. Background technique [0002] Vehicles are known having a heat engine that drives the wheels through a chain of transmissions, including manual or automatic types of transmissions, such as automatic transmissions (BVA), automatic mechanical transmissions (BVMP) or continuously variable transmissions ( CVT). [0003] Regardless of the type of transmission used, when the vehicle is operating under conditions of high environmental constraints, such as high heat or high altitudes where the oxygen content of the air is low, the heat engine runs in the lower RPM range The torque required by the driver is no longer available, causing the vehicle to lose its power. Contents of the invention [0004] The object of the present invention is to overcome this drawback by providing a method for controlling a transmission, in particular a transmission of a motor veh...

Claims

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Application Information

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IPC IPC(8): B60K25/02B60W10/06B60W10/30B60W30/188
CPCB60K25/02B60W10/06B60W10/30B60W30/1886B60W2510/305B60W2540/10B60W2710/305B60W2555/20B60W2555/40
Inventor 亚历克西斯·博维兰
Owner PEZHO SITROEN AUTOMOBILS SA