ECP Brake With Dual Mode Empty Load
First Claim
1. A rail vehicle brake system comprising:
- an electric controlled pneumatic brake valve connected to a brake pipe and including a controller connected to a network;
an empty-load device connecting the brake valve to a brake device;
the empty-load device including an inlet to receive a brake signal from the brake valve, an outlet for the brake device, a load sensing element, a change over valve for proportioning the pressure at the inlet and the outlet when empty is sensed by the load sensing element, and a differential pressure element connecting the load sensing element and the change over valve; and
an electro-pneumatic lock-out valve controlled by the controller and having a first position which allows the proportioning of the inlet pressure to the outlet and a lock-out position which pneumatically prevents the proportioning of the inlet pressure to the outlet.
1 Assignment
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Accused Products
Abstract
A rail vehicle brake system includes an electric controlled pneumatic brake valve having a controller and includes an empty-load device connecting the brake valve to a brake device. An electro-pneumatic lock-out valve is controlled by the controller and has a first position which allows the proportioning of the inlet pressure to the outlet by the empty-load device and a lock-out position which pneumatically prevents the proportioning of the inlet pressure to the outlet by the empty-load device. Also, the system may include a sensor for sensing the vehicle load; and the controller controls the brake valve in response to the sensed load taking into account the operation of the change over valve of the empty-load device. Also, an empty-load device including a load sensor is disclosed.
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Citations
24 Claims
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1. A rail vehicle brake system comprising:
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an electric controlled pneumatic brake valve connected to a brake pipe and including a controller connected to a network; an empty-load device connecting the brake valve to a brake device; the empty-load device including an inlet to receive a brake signal from the brake valve, an outlet for the brake device, a load sensing element, a change over valve for proportioning the pressure at the inlet and the outlet when empty is sensed by the load sensing element, and a differential pressure element connecting the load sensing element and the change over valve; and an electro-pneumatic lock-out valve controlled by the controller and having a first position which allows the proportioning of the inlet pressure to the outlet and a lock-out position which pneumatically prevents the proportioning of the inlet pressure to the outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A rail vehicle brake system comprising:
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an electric controlled pneumatic brake valve connected to a brake pipe and including a controller connected to a network; an empty-load device connecting the brake valve to a brake device; the empty-load device including an inlet to receive a brake signal from the brake valve, an outlet for the brake device, a load sensing element, a change over valve for proportioning the pressure at the inlet and the outlet when empty is sensed by the load sensing element, and a differential pressure element connecting the load sensing element and the change over valve; a sensor connected to the controller for sensing the vehicle load; and the controller controls the brake valve in response to the sensed load taking into account the operation of the change over valve. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. An empty-load device comprising:
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an inlet to receive a brake signal and an outlet for a brake device; a load sensing element, a change over valve for proportioning the pressure at the inlet and the outlet when empty is sensed by the load sensing element, and a differential pressure element connecting the load sensing element and the change over valve; and a sensor connected to the controller for sensing the position of the load sensing element of the empty-load device. - View Dependent Claims (22, 23, 24)
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Specification