Fuel shutoff valve

Patent metadata

Field	Value
Publication number	US-11299387-B2
Application number	US-202016916641-A
Country	US
Kind code	B2
Filing date	Jun 30, 2020
Priority date	Jul 23, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A casing 100 of fuel shutoff valve 10 includes a housing 120 having a partition part 122 with a communication hole 124, the partition part 122 dividing the inside of the casing into an upper space CU and a lower space CL, a check valve case 140 supporting a check valve structure 142, and a cutoff valve case 160 storing a float 162. The casing 100 includes a communication passage C10 connecting a space C16 storing the float 162 and a space C14 in the check valve case 140 and having a delivery opening 168 of the cutoff valve case, the communication hole 124, and a reception opening 146 of the check valve case. The reception opening 146 deviates relative to the delivery opening 168. The check valve case 140 includes an additional flow path part C142 allowing the circulation of fuel vapor, together with the communication hole.

First claim

What is claimed is:

1. A fuel shutoff valve, comprising:
a casing that allows circulation of fuel vapor in a fuel tank; and
a lid body that is attached to one end of the casing to change a direction of the circulation of fuel vapor having passed through the casing and send the fuel vapor to an outside, wherein
the casing includes
a housing that is provided with a partition part dividing an inside of the casing into an upper space and a lower space, the partition part having a communication hole allowing communication between the upper space and the lower space,
a check valve case that supports, in the upper space, a check valve structure maintaining an inner pressure of the fuel tank in a predetermined range, and
a cutoff valve case that stores, in the lower space, a float functioning as a cutoff valve preventing an outflow of liquid fuel through the casing,
the casing includes a communication passage connecting a space storing the float in the cutoff valve case and a space communicating to the outside in the check valve case, the communication passage including a delivery opening provided in the cutoff valve case, the communication hole provided in the partition part, and a reception opening provided in the check valve case, wherein
the check valve structure is configured such that the communication passage is blocked when the check valve structure is closed,
the reception opening is arranged at a position deviating to an inner side of the fuel shutoff valve relative to the delivery opening, and
the check valve case includes an additional flow path part that is a part of the communication passage, the additional flow path part allowing the circulation of fuel vapor from the delivery opening to the reception opening, together with the communication hole.

2. The fuel shutoff valve according to claim 1 , wherein the check valve case includes a projection projecting toward the cutoff valve case in the additional flow path part.

Assignees

• Toyoda Gosei Kk

Inventors

• Iino Takuro
• Sakata Yoshihiro
• Kito Hiroaki

Classifications

• B67D7/367 Primary

  the float acting pneumatically on a shut-off valve · CPC title

• B60K2015/03296

  Pressure regulating valves · CPC title

• B60K2015/03585

  by gas pressure · CPC title

• B60K2015/03514

  with vapor recovery means · CPC title

• F02M37/0076

  Details of the fuel feeding system related to the fuel tank (vehicle fuel tanks B60K15/03) · CPC title