Railway vehicle and method for operating vehicle
AssigneeHitachi, Ltd.
InventorsIwao Harada, Masakazu Matsumoto
Life of this patent
Estimating the term…
Abstract
A railway vehicle includes an air intake 6 provided at a nose portion of a leading vehicle 1, an air tank (reservoir) 9 for storing intake air, and an air outlet 11, by which air is sucked in (breathed in) during entry of the leading vehicle to a tunnel and discharged within the tunnel, so as to reduce the pressure generated at the nose portion and to cut down micropressure waves. When the nose of the leading vehicle 1 enters a tunnel 3, an intake control valve 8 of the air reservoir, depressurized to below atmospheric pressure (1 atm), opens to take in air through an air inlet 6 via a path 7 into the air reservoir 9. When the whole leading vehicle enters the tunnel, the intake control valve 8 closes, and air is discharged through the outlet 11 via a pump 10.
Claims15
A railway vehicle comprising:
- an air inlet for taking in air disposed on a surface of a car body at a nose portion of a leading vehicle;
- an air outlet for discharging the air being taken in disposed rearward from said nose portion in a direction of travel;
- and
- an air intake tank separated from a passenger cabin and communicating said air inlet and said air outlet;
- and
- an automatic train control for controlling said air intake tank to take in air through said air inlet and store the same when said leading vehicle enters a tunnel, and to control discharging of the air through said air outlet when a predetermined time has passed, wherein said automatic train control system is configured to regulate air in said air intake tank in coordination with the position of the vehicle relative to the tunnel.
A railway vehicle comprising:
- an air inlet for taking in air disposed on a surface of a car body at a nose portion of a leading vehicle;
- an air outlet for discharging the air being taken in disposed rearward from said nose portion in a direction of travel;
- and
- an air intake tank mounted relative to the car body and communicating said air inlet and said air outlet;
- a pump disposed between said air intake tank and said air outlet;
- an air intake valve disposed on an air inlet side of said air intake tank, wherein said air intake valve is configured with an open position to allow air into said air intake tank and a closed position to prevent air from entering said air intake tank, and wherein said pump is located on an air outlet side of said air intake tank.
The railway vehicle comprising:
- an air inlet for taking in air disposed on a surface of a car body at a nose portion of a leading vehicle;
- an air outlet for discharging the air being taken in disposed rearward from said nose portion in a direction of travel;
- and
- an air intake tank separated from a passenger cabin and communicating said air inlet and said air outlet;
- and
- an automatic train control for controlling said air intake tank to start to take in air through said air inlet before said leading vehicle enters a tunnel, and to terminate air intake through said air inlet when the nose portion of said leading vehicle completes entering the tunnel.
A method for operating a vehicle whose operation is controlled via an automatic train control system:
- and which comprises a mechanism for taking in and discharging air, the method comprising:
- when the vehicle passes through a tunnel, controlling said mechanism by the automatic train control system to take in air when said vehicle enters the tunnel;
- and
- after a predetermined time has passed, controlling said mechanism by the automatic train control system to discharge the taken-in air;
- wherein said automatic train control system is configured to operate said mechanism in coordination with the position of the vehicle relative to the tunnel.
Dependencies are inferred from the claim text.