Spring-loaded fuel storing device

• US 3,958,547 A
• Filed: 11/20/1973
• Issued: 05/25/1976
• Est. Priority Date: 11/27/1972
• Status: Expired due to Term

• Current Assignee: Nippondenso Co., Ltd. (DENSO Corporation)
• Original Assignee: Nippondenso Co., Ltd. (DENSO Corporation)
• Inventors: Ogawa, Oyuki
• Primary Examiner(s): Myhre, Charles J.
• Assistant Examiner(s): Lazarus, Ira S.
• Application Number:
  US05/417,486
• Time in Patent Office: 917 Days
• Field of Search: 123/198 D, 123/198 DB, 123/198 R, 123/142, 251/61, 251/61.4, 138/28, 138/30, 138/31
• US Class Current: 123/198.00D
• CPC Class Codes: F02M 2200/315 for damping fuel pressure fluctuations
• CPC Class Codes: F02M 37/0041 Means for damping pressure pulsations equalisation of pulses in positive displacement pumps F04B1/00; devices for damping fluid pulsations in pipes F16L55/04
• CPC Class Codes: F02M 69/465 of fuel rails
• CPC Class Codes: F15B 1/04 Accumulators
• CPC Class Codes: F15B 2201/21 using springs
• CPC Class Codes: F15B 2201/3151 the flexible separating means being diaphragms or membranes
• CPC Class Codes: F15B 2201/3156 characterised by their attachment
• CPC Class Codes: F15B 2201/41 Liquid ports
• CPC Class Codes: F15B 2201/4155 having valve means

Abstract

What follows is the description of a spring-loaded device for use in the fuel system of an internal combustion engine. The device includes a spring-loaded membrane connected to a valve which in turn provides access to atmospheric air. The arrangement is such that the danger of fuel escaping into the atmosphere or into the engine compartment is prevented.

Claims

1. In combination with a fuel system of an internal combustion engine, a spring-loaded device for use in the fuel system to maintain pressure therein and ensure warm starting of the engine, comprising,

a. a housing,

b. a flexible membrane mounted within said housing and defining two chambers with said housing,

c. fuel supply means extending to one of said chambers, said fuel supply means and said one chamber defining a portion of a fuel flow path

d. means defining a perforation in a wall of the housing communicating the other of said chambers with the atmosphere,

e. rod means extending through said means defining the perforation and into said other chamber and having a terminus connected to said flexible membrane,

f. spring means,

g. means mounting said spring means in said other chamber between the perforation and the diaphragm, and

h. said rod means further including means at a distal end portion thereof operative with said spring means to close the perforation and thereby prevent the fuel from diverting from its defined fuel flow path and flowing to the atmosphere from said other chamber upon inadvertent fracture of said flexible membrane.

2. In a spring-loaded device as claimed in claim 1, in which the said spring is coaxial with said means extending through said means defining the perforation and is interposed between the flexible member and the said wall of the housing forming the other of said chambers.

3. In a spring-loaded device as claimed in claim 1, in which the means defining the perforation includes means defining a sealing disc.