초록 ▼

A control method of a hydraulic pressure source-driven type vehicle hydraulic pressure brake system in which no irritating noises or vibrations are produced during stoppage of the vehicle and which does not consume electric power in waste. When the vehicle stops and the surroundings become quiet, by

A control method of a hydraulic pressure source-driven type vehicle hydraulic pressure brake system in which no irritating noises or vibrations are produced during stoppage of the vehicle and which does not consume electric power in waste. When the vehicle stops and the surroundings become quiet, by detecting stoppage of the vehicle by a sensor for detecting the rotation of a wheel, stopping a motor for a pump for producing brake hydraulic pressure, and opening a solenoid valve in a master cylinder passage bringing the master cylinder and the wheel cylinder into communication with each other, it is possible to prevent noises or vibrations from the motor and wasteful consumption of electric power.

대표청구항 ▼

A control method of a hydraulic pressure source-driven type vehicle hydraulic pressure brake system in which no irritating noises or vibrations are produced during stoppage of the vehicle and which does not consume electric power in waste. When the vehicle stops and the surroundings become quiet, by

A control method of a hydraulic pressure source-driven type vehicle hydraulic pressure brake system in which no irritating noises or vibrations are produced during stoppage of the vehicle and which does not consume electric power in waste. When the vehicle stops and the surroundings become quiet, by detecting stoppage of the vehicle by a sensor for detecting the rotation of a wheel, stopping a motor for a pump for producing brake hydraulic pressure, and opening a solenoid valve in a master cylinder passage bringing the master cylinder and the wheel cylinder into communication with each other, it is possible to prevent noises or vibrations from the motor and wasteful consumption of electric power. the gasoline, the storage tank having an inlet at the top of the tank; a riser pipe extending between the port and the inlet for communicating gasoline between the first containment bucket and the storage tank; a fitting disposed along the riser pipe between the storage tank and the first containment bucket, the fitting being coupled to a remote containment bucket; a drop tube concentrically disposed within the riser pipe that extends into the storage tank; and a seal between the riser pipe and the drop tube for containing gasoline vapors, the seal being located below the fitting. 9. The unit of claim 8, wherein the remote containment bucket is connected to and in communication with the riser pipe, remote containment bucket being remotely located from the first containment bucket, the seal being disposed at a location beneath the connection between the remote containment bucket and riser pipe. 10. The unit of claim 8, wherein the drop tube extends from a position proximate ground level to a location within the underground storage tank. 11. The unit of claim 8, wherein the drop tube extends from a position proximate the seal to a location within the underground storage tank. 12. The unit of claim 8, wherein the seal comprises a system that includes a standard pipe nipple coupled between the riser pipe and the inlet, a drop tube adapter fitting concentrically disposed within the pipe nipple, and an O-ring disposed between the adapter fitting and the pipe nipple. 13. The unit of claim 8, wherein the seal is an O-ring that is received by O-ring groove located at an end of the riser pipe. 14. A drop tube sealing assembly comprising: a riser tube having a proximal end, the proximal end having internal threads; an underground storage tank spaced apart from the proximate end, the storage tank having a threaded inlet; a standard pipe nipple having a first end in cooperation with the proximal end, an opposite end in cooperation with the threaded inlet, and an annular inner surface that forms a conduit, the inner surface comprising a female thread section; a drop tube adapter fitting concentrically disposed within the pipe nipple, the adapter fitting having an outer surface containing external threads in cooperation with the female thread section; a seal disposed between the adapter fitting and the pipe nipple; and a drop tube having a open end coupled to the adapter fitting. 15. A method of preventing vapors from passing from an underground storage tank into the atmosphere, the method comprising: providing a riser pipe that is connectable and upwardly extends from the top of the underground storage tank into the atmosphere; concentrically disposing a drop tube within the riser pipe, wherein the riser pipe extends into the underground storage tank; and providing a seal between the riser pipe and the drop tube at a location proximate the top of the underground storage tank. [FOREIGN-PATENT]1 252 298, GB