Redundant braking system
First Claim
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1. A braking system for a truck comprising:
- a hydraulic braking system on the truck, the hydraulic braking system configured to apply brake force to the truck through a first brake apparatus;
a modulated electric braking system on the truck, the modulated electric braking system being separate from the hydraulic braking system and configured to apply brake force to the truck through a second brake apparatus completely separate from the first brake apparatus; and
a control system for monitoring a status of said hydraulic braking system and automatically switching to the modulated electric braking system from the hydraulic braking system during truck travel when the hydraulic braking system fails,wherein the first brake apparatus is not actuable by the modulated electric braking system and the second brake apparatus is not actuable by the hydraulic braking system.
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Accused Products
Abstract
Disclosed is a redundant braking system for a vehicle. A controller may monitor a status of a hydraulic braking system, and during vehicle travel, automatically switch to a modulated electric braking system which is separate from the hydraulic braking system when the hydraulic braking system fails. The modulated electric braking system may utilize a brake acting on a drive shaft of the vehicle, and an operator-actuated switch may set a mode of the modulated electric braking system to a non-modulated parking brake mode.
68 Citations
20 Claims
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1. A braking system for a truck comprising:
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a hydraulic braking system on the truck, the hydraulic braking system configured to apply brake force to the truck through a first brake apparatus; a modulated electric braking system on the truck, the modulated electric braking system being separate from the hydraulic braking system and configured to apply brake force to the truck through a second brake apparatus completely separate from the first brake apparatus; and a control system for monitoring a status of said hydraulic braking system and automatically switching to the modulated electric braking system from the hydraulic braking system during truck travel when the hydraulic braking system fails, wherein the first brake apparatus is not actuable by the modulated electric braking system and the second brake apparatus is not actuable by the hydraulic braking system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A braking system for a land vehicle under control of an operator comprising:
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a hydraulic braking system configured to apply brake force through a first brake apparatus; an electric braking system separate from the hydraulic braking system and configured to apply modulated brake force through a second brake apparatus completely separate from the first brake apparatus; an operator actuated switch for switching the vehicle to a silent mode of operation; and a controller for switching from the hydraulic braking system to the modulated electric braking system responsive to actuation of the switch during vehicle travel. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of operating a braking system of a vehicle, comprising:
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sensing a failure of air pressure in an air-over-hydraulic braking system on the vehicle during vehicle travel; and automatically actuating an electric braking system responsive to said sensing to provide modulated electric braking during continued vehicle travel, the electric braking system being completely separate from the air-over-hydraulic braking system, wherein the air-over-hydraulic braking system applies modulated force through a first brake apparatus, the electric braking system applies modulated force through a second brake apparatus, and the first brake apparatus is completely independent of the second brake apparatus. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification