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公开(公告)号：US10647309B2
公开(公告)日：2020-05-12
申请号：US16202750
申请日：2018-11-28
摘要： A quick service limiting valve includes a housing defining an interior chamber, a brake pipe passageway, and a brake cylinder passageway, a valve member received within the interior chamber of the housing, with the valve member including a body, a first seal, a second seal, and a valve spring. The body of the valve member defines a valve passageway, with the valve member having a first position where the valve passageway allows fluid communication between the brake pipe passageway and the brake cylinder passageway and a second position where the brake pipe passageway is isolated from the brake cylinder passageway. The valve further includes a follower assembly received within the interior chamber of the housing, with the follower assembly including a body, a first check valve, a second check valve, a diaphragm, and a follower spring.
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公开(公告)号：US20190054935A1
公开(公告)日：2019-02-21
申请号：US16076412
申请日：2017-03-02
摘要： A parking brake control module using pneumatic logic to control a parking brake on a railway vehicle. The control module includes a brake pipe passageway, a reservoir passageway, a reservoir release valve, and an actuation cylinder vent valve. The control module applies or releases the parking brake based on pressures of the brake pipe and reservoir. A method uses pneumatic logic to control a parking brake on a railway car. The parking brake is applied when the brake pipe pressure falls below a lower brake pipe pressure threshold and is released when the brake pipe pressure exceeds an upper brake pipe pressure threshold and the reservoir pressure exceeds a reservoir pressure threshold. A hold valve can allow an operator to manually prevent the release of the parking brake.
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公开(公告)号：US09925969B2
公开(公告)日：2018-03-27
申请号：US15062721
申请日：2016-03-07
CPC分类号： B60T15/36 , B60T13/665 , B60T15/021 , B60T15/302 , B60T17/228 , B61H13/34
摘要： A hot wheel protection valve arrangement including a hot wheel protection valve, the hot wheel protection valve including a body defining a passageway, a piston slidably positioned within the passageway, a bushing positioned on the piston and within the passageway, a first diaphragm provided on a first end of the piston, the first diaphragm defining a first chamber in the passageway, a second diaphragm provided on a second end of the piston, the second diaphragm defining a second chamber in the passageway, a third chamber being defined between the first diaphragm and the second diaphragm, and an exhaust port defined in the body and in fluid communication with the third chamber, a brake cylinder line that establishes fluid communication between a brake cylinder, the first chamber, and the third chamber; and an emergency reservoir line that establishes fluid communication between an emergency reservoir and the second chamber.
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公开(公告)号：US10960870B2
公开(公告)日：2021-03-30
申请号：US16127762
申请日：2018-09-11
摘要： A system and method for monitoring air pressure applied to a brake cylinder of a braking assembly of a railway vehicle, including an empty-load device, and an RFID transducer in communication with the empty-load device, wherein the RFID transducer is configured to measure the air pressure delivered to the brake cylinder of the braking assembly, and generate data on the air pressure delivered to the brake cylinder of the braking assembly; and a remote data monitor configured to read data from the RFID transducer.
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公开(公告)号：US20190381985A1
公开(公告)日：2019-12-19
申请号：US16558221
申请日：2019-09-02
IPC分类号： B60T15/02
摘要： A system for converting an ABDW-type control valve to an ABDX-type control valve for use in a braking mechanism for a railway vehicle includes an ABDW-type control valve body in communication with an air supply system of the braking mechanism for controlling an application and release of brakes in response to changes in air pressure within the braking mechanism. A breather plate is mounted on an accelerated application valve interface on the control valve body. The breather plate has an internal stability volume for compensating a function of an accelerated application valve. A modified slide valve bushing is mounted inside the control valve body for establishing fluid communication with at least one passageway within the control valve body. At least one plug mounted is to at least one air passageway within the control valve body for sealing or choking the at least one air passageway.
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公开(公告)号：US10059320B2
公开(公告)日：2018-08-28
申请号：US15414783
申请日：2017-01-25
CPC分类号： B60T15/54 , B60T11/326 , B60T15/048 , B60T15/184 , B60T15/36 , B60T17/04
摘要： An automatic retainer valve includes a body defining a piston passageway and at least one piston positioned within the piston passageway, a brake pipe and reference volume in fluid communication with a first end of the valve, a brake cylinder in fluid communication with a second end of the valve, and an exhaust port defined in the body and positioned between the first and second ends of the valve. Pressurized fluid may be vented from the brake cylinder via the exhaust port upon a brake cylinder pressure exceeding a reference volume pressure. The brake cylinder pressure may push the at least one piston towards the first end of the valve until the brake cylinder pressure equalizes with the reference volume pressure.
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公开(公告)号：US20220063574A1
公开(公告)日：2022-03-03
申请号：US17397766
申请日：2021-08-09
摘要： A brake control system includes one or more processors communicatively connected to at least one sensor configured to output at least one property measurement of air in a brake pipe of a vehicle braking assembly. The one or more processors are configured to determine, based on the at least one property measurement, a pressure reduction lower limit (PRLL) in the brake pipe. The one or more processors are further configured to control movement of a vehicle system that includes the brake pipe to enforce the PRLL by preventing a pressure reduction in the brake pipe that is less than the PRLL while one or more air reservoirs of the vehicle braking assembly are at a reduced charge state.
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公开(公告)号：US20200079342A1
公开(公告)日：2020-03-12
申请号：US16127762
申请日：2018-09-11
摘要： A system and method for monitoring air pressure applied to a brake cylinder of a braking assembly of a railway vehicle, including an empty-load device, and an RFID transducer in communication with the empty-load device, wherein the RFID transducer is configured to measure the air pressure delivered to the brake cylinder of the braking assembly, and generate data on the air pressure delivered to the brake cylinder of the braking assembly; and a remote data monitor configured to read data from the RFID transducer.
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公开(公告)号：US20180208172A1
公开(公告)日：2018-07-26
申请号：US15414783
申请日：2017-01-25
CPC分类号： B60T15/54 , B60T11/28 , B60T15/184
摘要： An automatic retainer valve includes a body defining a piston passageway and at least one piston positioned within the piston passageway, a brake pipe and reference volume in fluid communication with a first end of the valve, a brake cylinder in fluid communication with a second end of the valve, and an exhaust port defined in the body and positioned between the first and second ends of the valve. Pressurized fluid may be vented from the brake cylinder via the exhaust port upon a brake cylinder pressure exceeding a reference volume pressure. The brake cylinder pressure may push the at least one piston towards the first end of the valve until the brake cylinder pressure equalizes with the reference volume pressure.
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公开(公告)号：US20170253226A1
公开(公告)日：2017-09-07
申请号：US15062721
申请日：2016-03-07
CPC分类号： B60T15/36 , B60T13/665 , B60T15/021 , B60T15/302 , B60T17/228 , B61H13/34
摘要： A hot wheel protection valve arrangement including a hot wheel protection valve, the hot wheel protection valve including a body defining a passageway, a piston slidably positioned within the passageway, a bushing positioned on the piston and within the passageway, a first diaphragm provided on a first end of the piston, the first diaphragm defining a first chamber in the passageway, a second diaphragm provided on a second end of the piston, the second diaphragm defining a second chamber in the passageway, a third chamber being defined between the first diaphragm and the second diaphragm, and an exhaust port defined in the body and in fluid communication with the third chamber, a brake cylinder line that establishes fluid communication between a brake cylinder, the first chamber, and the third chamber; and an emergency reservoir line that establishes fluid communication between an emergency reservoir and the second chamber.
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