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Driver braking demand indicator apparatus for heavy vehicle

A heavy-duty vehicle, driver's technology, applied in the driver's brake demand indicator (indicator) equipment, higher than the field, can solve the problem of lack or lack

Inactive Publication Date: 2016-04-06
BENDIX COMML VEHICLE SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage in the method of delivering pressure using a valve is the lack or lack of information about the driver's intention to slow down the truck during the initial phase of the pedal movement

Method used

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  • Driver braking demand indicator apparatus for heavy vehicle
  • Driver braking demand indicator apparatus for heavy vehicle
  • Driver braking demand indicator apparatus for heavy vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0010] reference figure 1 , The device 10 is provided for use in heavy vehicles such as trucks. The device 10 is constructed according to one embodiment. in figure 1 In this, wire connections are shown as solid lines, pneumatic line connections are shown as dashed lines, and mechanical coupling or physical contact are shown as clear thick lines.

[0011] The brake pedal 12 is operatively coupled to the foot brake valve 14 in a known manner. The pedal 12 may include any type of commercially available brake pedal. The pneumatic portion of valve 14 may include any type of commercially available foot brake valve. The pedal 12 may be part of the valve 14 or may be separate from the valve 14 and connected to the valve 14 by a linkage.

[0012] When the vehicle driver desires to apply the vehicle's service brake (brake), the vehicle driver (as represented by line 11) applies a foot to pedal 12 to move a piston (not shown) in valve 14 via line 13. The traveling movement of the piston c...

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PUM

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Abstract

A driver braking demand indicator apparatus comprises a brake valve including (i) a brake valve member movable in response to a driver moving a brake applicator member, and (ii) a delivery pressure line to operate a vehicle service brake circuit. The apparatus also comprises a travel sensor arranged to (i) sense movement of the brake valve member, and (ii) provide a first signal indicative of the extent of travel of the brake valve member when movement of the brake valve member is sensed. The apparatus further comprises a delivery pressure line sensor arranged to (i) sense pressure in the delivery pressure line of the brake valve, and (ii) provide a second signal indicative of the pressure in the delivery pressure line. The apparatus also comprises a controller arranged to process the first and second signals to provide a driver braking demand signal for at least one external device.

Description

Background technique [0001] The present application relates to heavy vehicle braking, and particularly to driver braking demand indicator devices for heavy vehicles such as trucks. [0002] A known method of indicating the driver's braking demand is to determine the extent of travel of the piston of the truck's foot brake valve. When the driver desires to operate the service brake of the vehicle, the driver applies his foot to the brake pedal, which in turn causes the piston to travel. The disadvantage of using the piston travel method is that the sensitivity (ie, delivery pressure / travel distance) of the foot brake valve increases significantly at higher levels of driver braking demand. This high sensitivity makes it difficult to use only the travel movement of the piston to determine the driver's expected braking demand. Another disadvantage of using the piston travel method is that additional mechanical parts are required. These mechanical parts will not be additionally requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T7/04B60T13/66B60T13/68
CPCB60T7/042B60T13/662B60T13/683B60T17/22B60T7/04B60T13/66B60T13/68B60T7/02B60W50/14
Inventor D.J.塞卢拉C.L.布鲁贝克
Owner BENDIX COMML VEHICLE SYST LLC
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