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US 2006/0222518 A1Published application
Solenoid valve, flow-metering valve, high-pressure fuel pump and fuel injection pump
AssigneeDenso Corporation
InventorsKaoru Oda, Hiroshi Inoue, Nobuo Ota, Yoshitsugu Inaguma, Yutaka Niwa
Life of this patent
Estimating the term…
Abstract
A flow-metering valve for metering a flow of liquid has a valve member, a stopper and an electromagnetic driving member. The valve m ember is reciprocally displaceably arranged between a first position and a second position in the liquid chamber. The stopper is arranged at the second position in the liquid chamber. The electromagnetic driving member generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.
Claims10
A flow-metering valve for metering a flow of liquid, comprising:
- a liquid inlet port, through which the liquid is supplied to the flow-metering valve;
- a liquid outlet port, through which the liquid outflows from the flow-metering valve;
- a liquid chamber that is formed between the liquid inlet port and the liquid outlet port;
- a valve member, which is arranged in the liquid chamber, wherein:
- the valve member is reciprocally displaceable between a first position and a second position in the liquid chamber according to a differential pressure between a first position side of the valve member and a second position side of the valve member;
- and
- the valve member enables communication between the liquid inlet port and the liquid outlet port when the valve member is spaced away from the first position;
- a stopper that is arranged at the second position in the liquid chamber, wherein the stopper contacts the valve member when the valve member is located at the second position, which serves as a valve opening position;
- and
- an electromagnetic driving member that generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.
7 more elements
A solenoid valve, comprising:
- a liquid inlet port, through which liquid is supplied to the solenoid valve;
- a liquid outlet port, through which the liquid outflows from the solenoid valve;
- a liquid passage that is arranged between the liquid inlet port and the liquid outlet port;
- a valve member that opens and closes the liquid passage;
- a first bias member that provides a bias force to bias the valve member in a first direction such that the valve member closes the liquid passage;
- a needle that is displaceable independently of the valve member, wherein the needle contacts the valve member to limit displacement of the valve member in the first direction;
- an electromagnetic driving member that includes:
- a mobile core that is displaceable along with the needle;
- a stationary core that is arranged to face with the mobile core;
- and
- a coil that generates a magnetic attractive force to attract the mobile core to the stationary core such that the needle is displaced in a second direction toward the valve member;
- and
- a second bias member that provides a bias force to bias the needle in the second direction, wherein the bias force of the first bias member is greater than the bias force of the second bias member.
10 more elements
A solenoid valve, comprising:
- a liquid inlet port, through which liquid is supplied to the solenoid valve;
- a liquid outlet port, through which the liquid outflows from the solenoid valve;
- a liquid passage that is arranged between the liquid inlet port and the liquid outlet port;
- a valve member that opens and closes the liquid passage;
- a bias member that biases the valve member in a first direction such that the valve member closes the liquid passage;
- and
- an electromagnetic driving member that includes:
- a mobile core that is displaceable along with the valve member;
- a stationary core that is arranged to face with the mobile core;
- and
- a coil that generates a magnetic attractive force in such a manner that the mobile core is attracted to the stationary core, wherein the coil generates the magnetic attractive force such that the valve member is displaced in a second direction so that the valve member opens the liquid passage.
8 more elements
Dependencies are inferred from the claim text.