Invention Grant
- Patent Title: Fuel pump for a direct injection system with a better hydraulic sealing of the intake valve
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Application No.: US15139542Application Date: 2016-04-27
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Publication No.: US09856844B2Publication Date: 2018-01-02
- Inventor: Michele Petrone , Enrico Vezzani , Massimo Mattioli
- Applicant: MAGNETI MARELLI S.p.A.
- Applicant Address: IT Corbetta
- Assignee: MAGNETI MARELLI S.p.A.
- Current Assignee: MAGNETI MARELLI S.p.A.
- Current Assignee Address: IT Corbetta
- Agency: Howard & Howard Attorneys PLLC
- Priority: ITBO2015A0211 20150428
- Main IPC: F02M59/44
- IPC: F02M59/44 ; F02M59/36 ; F02M63/02 ; F02M59/06 ; F02M59/10 ; F02M59/02 ; F02M59/20 ; F02M59/46 ; F16K1/32 ; F16K31/06

Abstract:
A fuel pump for a direct injection system having: a pumping chamber; a piston, which is mounted in a sliding manner on the inside of the pumping chamber; an intake channel, which originates from a wall of the pumping chamber and has a housing portion; an intake valve, which is inserted into the housing portion of the intake channel; and a locking ring nut with an annular shape, which is threaded and is screwed into the housing portion of the intake channel so as to strike against the intake valve; the housing portion has an annular abutment, which reduces the diameter of the housing portion and against which the intake valve strikes; the locking ring nut is screwed into the housing portion with a tightening force that is sufficient to determine a plastic deformation of the annular abutment against the intake valve.
Public/Granted literature
- US20160319789A1 FUEL PUMP FOR A DIRECT INJECTION SYSTEM WITH A BETTER HYDRAULIC SEALING OF THE INTAKE VALVE Public/Granted day:2016-11-03
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