초록 ▼

A hydraulic valve with hydraulically assisted opening comprises a valve body that defines a fluid passage which includes an upstream segment and a downstream segment. Contained within the valve body is a moveable valve member which includes a hydraulic surface. The hydraulic surface is exposed to fl

A hydraulic valve with hydraulically assisted opening comprises a valve body that defines a fluid passage which includes an upstream segment and a downstream segment. Contained within the valve body is a moveable valve member which includes a hydraulic surface. The hydraulic surface is exposed to fluid pressure within the downstream segment of the fluid passage. When the valve member is in a closed position, the upstream segment of the fluid passage is closed to the downstream segment. The upstream segment is fluidly connected to the downstream segment when the valve member is away from the closed position.

대표청구항 ▼

1. A hydraulic valve with hydraulically assisted opening comprising: a valve body defining a fluid passage, said fluid passage having an upstream segment and a downstream segment; a moveable valve member at least partially positioned within said valve body, an end of said valve member including a h

1. A hydraulic valve with hydraulically assisted opening comprising: a valve body defining a fluid passage, said fluid passage having an upstream segment and a downstream segment; a moveable valve member at least partially positioned within said valve body, an end of said valve member including a hydraulic surface that defines a portion of said downstream segment; said upstream segment of said fluid passage being closed to said downstream segment when said valve member is in a closed position; said upstream segment of said fluid passage being fluidly connected to said downstream segment when said valve member is away from said closed position; an electrical actuator attached to said valve body and being operable in an energized state to move said valve member toward said closed position; a spring operably positioned to bias said valve member toward a fully open position; said upstream segment of said fluid passage is fluidly connected to a source of high pressure fluid; said downstream segment of said fluid passage is fluidly connected to a low pressure reservoir; a portion of said downstream segment is a turbulence chamber; said hydraulic surface is exposed to fluid pressure in said turbulence chamber; and an amount of fuel flowing from said upstream segment to said downstream segment having a dynamic pressure, said turbulence chamber being shaped and positioned to convert a portion of said dynamic pressure into a stagnation pressure.