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A method for controlling a differential braking arrangement

A technology of differential braking and braking force, applied in the direction of control device, differential transmission device, transmission device, etc., can solve problems such as wheel slippage

Active Publication Date: 2020-01-17
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when engaging the auxiliary braking device, there is a risk that one of the wheels will slip relative to the other wheels

Method used

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  • A method for controlling a differential braking arrangement
  • A method for controlling a differential braking arrangement
  • A method for controlling a differential braking arrangement

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Embodiment Construction

[0034] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for sufficiency and completeness. Throughout the specification, the same reference numerals denote the same elements.

[0035] special reference figure 1 , a vehicle 100 in the form of a truck is provided to which the disclosed method can be applied. As can be seen, the vehicle 100 comprises a prime mover 1 , here in the form of an internal combustion engine, and a gearbox 2 connected downstream of the prime mover 1 . The vehicle 100 also includes a front axle 10 comprising a pair of front steerable wheels 102, 102'. The front axle 10 may be a non-driven axle or a driven axle. The vehicle 100 also includes a first rear axl...

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Abstract

The present invention relates to a method for controlling a differential braking arrangement (208, 210) of a vehicle (100), said vehicle (100) comprising at least one auxiliary braking arrangement (212) and at least one differential braking arrangement (208, 210), said auxiliary braking arrangement (212) and said differential braking arrangement (208, 210) being connected to a pair of propelled wheels (104, 104', 106, 6') of said vehicle (100), wherein the differential braking arrangement (208, 210) is arranged to control a relative rotational speed between the pair of propelled wheels (104, 04', 106, 106'), wherein the method comprises the steps of receiving (S1) a signal indicative of a downhill slope (306) for a road ahead of said vehicle (100); determining (S2) an inclination (304) ofsaid downhill slope (306); determining (S3) a braking power needed for the at least one auxiliary braking arrangement (212) for preventing the vehicle speed of the vehicle (100) from exceeding a predetermined speed limit when driving at the downhill slope (306); and engaging (S4) the at least one differential braking arrangement (212) for reducing the relative rotational speed between the propelled wheels (104, 104', 106, 106') if the determined braking power of the at least one auxiliary braking arrangement (212) is higher than a predetermined threshold limit, wherein the at least one differential braking arrangement (208, 210) is engaged when the vehicle (100) is positioned at a predetermined distance (302) from the downhill slope (306).

Description

technical field [0001] The invention relates to a method for controlling a differential braking system of a vehicle. The invention also relates to a system for controlling a differential braking device and a vehicle comprising such a system. The invention is preferably applicable to heavy vehicles commonly referred to as trucks. However, the present invention can also be applied to any other vehicle including an auxiliary braking device and a differential braking device. Background technique [0002] With regard to light, medium and heavy vehicles, also commonly referred to as trucks, high demands are always placed on vehicle brakes. These requirements relate in particular to the braking capabilities of the vehicle, since the vehicle brakes need to function correctly to sufficiently slow the vehicle. [0003] It is particularly relevant, for example, that the vehicle brakes are functioning correctly when driving on relatively steep downhill grades in which braking has to ...

Claims

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Application Information

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IPC IPC(8): B60W30/14B60W30/18B60W30/184B60K23/04
CPCB60K23/04B60W30/146B60W30/18136B60W30/184B60T2201/04B60T2201/14B60K17/36B60W2552/15B60K2023/046B60T8/172B60T8/18B60T8/245B60T8/58B60T2210/14B60T2210/20B60T2210/32B60T2250/02B60T2250/04B60T2260/09B60W10/16B60W10/18B60W30/18109B60W2520/10B60W2530/10B60W2710/125B60W2710/18B60W2720/10F16H48/22F16H48/24
Inventor 尼克拉斯·奥贝格安德斯·埃里克森
Owner VOLVO LASTVAGNAR AB
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