Ford Global Technolgoies, LLC

Paul Zeng

Vince Paul Solferino

Patrick Brostrom

Scott Lehto

Ross Dykstra Pursifull

Joseph F Basmaji

Kyi Shin Shiah

Robin Ivo Lawther

Mark L Stickler

Giuseppe DeRose, Jr

Joseph Norman Ulrey

Abdelkrim Zouani

Ahsanul Karim

Kevin William Plymale

Michael Robert Kaput

Kwan Jamal Barber

Syed M Ahmed

Gopichandra Surnilla

Mark Meinhart

Christopher Arnold Woodring

Jim Chern

Jacob Jensen

Simon Antonov

A method for operating a solenoid valve coupled to the inlet valve of a fuel injection pump comprises adjusting a pull-in electrical energy of the solenoid valve based on a fuel injection pump volumetric efficiency.

High pressure fuel pump control for idle tick reduction

Methods and systems are provided for adjusting operation of fuel injectors of an internal combustion engine to reduce injector ticking noise during direct injection fuel rail pressure release. The method includes first reducing a significant part of the direct injection fuel rail pressure via a mechanical high pressure pump relief valve and only if further pressure relief is required then intermittently activating the direct injector to inject in small amount of fuel. Due to the reduced frequency of activation and small pulse-widths, the impact force transmitted from injectors to cylinder head is small thereby reducing the objectionable ticking noise.

Methods and systems for fuel rail pressure relief

Methods and systems are provided for a direct injection fuel pump. The methods and system control pressure within a compression chamber so as to improve fuel pump lubrication.

Direct injection fuel pump

A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may be driven via a rotating motor. The fuel system may reduce engine noise and may provide improved fuel pressure control.

Fuel pump with quiet rotating suction valve

Systems and methods are provided for a high-pressure fuel pump to mitigate audible ticking noise associated with opening and closing of a digital inlet valve of the high-pressure pump. To reduce the ticking noise associated with the high-pressure pump when the engine is idling, a solution is needed that is simple and does not involve retrofitting the fuel system with noise, vibration, and harshness countermeasures to mask the noise. Pressure devices and associated operation methods are provided that involve adding a combination of several check valves, an accumulator, and a flow control valve with weep channels to allow the digital inlet valve to be deactivated during engine idling as defined by a threshold engine speed.

Pressure device to reduce ticking noise during engine idling

A method is provided which mitigates the noise of a direct injection system in a port fuel injection and direct fuel injection (PFI-DI) engine and reduces NVH hardware. During a cold-start, the engine idle speed may be increased to mitigate the direct injection noise and during a warm idle, the engine cooling fan may be turned on during a direct injector cleanout cycle to mitigate the direct injection noise. This allows the PFI-DI engine to be run more efficiently without concern of the noise produced by the direct injectors and high pressure pump of the direct injection system.

Method and system for direct injection noise mitigation

A fuel system including a high pressure fuel pump with a quiet fuel metering valve is disclosed. In one example, the quiet fuel metering valve may be cam driven. The fuel system may reduce engine noise and may provide operating modes that are different from other fuel systems.

Fuel pump with quiet cam operated suction valve

A method of pressuring fuel for a direct injection fuel system via a fuel pump in an engine is provided. The method includes, during a first mode, adjusting a magnetic solenoid valve (MSV) to control pump outlet pressure and during a second mode, deactivating the MSV and controlling pump outlet pressure via a noise-reducing valve assembly on an inlet side of the fuel pump.

Engine fuel pump and method for operation thereof

A method for operating a fuel pump is provided. The method may include decreasing a pump chamber pressure, passively opening a metering valve coupled to a pump chamber in response to the decreasing, and while the metering valve is open, generating a rotational output via a motor, transferring the rotational output into an actuation force applied to the metering valve via a metering valve actuation device, and inhibiting the metering valve from closing via sustaining application of the actuation force.

Fuel pump with metering valve

A canister purge valve, fuel vapor recovery system, and method are provided. The canister purge valve may include an inlet port configured to be coupled with an inlet line to receive a fluid from a vapor-recovery canister. The canister purge valve may also include an outlet having two or more exit ports configured to be coupled with a common exit line to pass the fluid to an engine. In this way, improved mixing may be achieved without substantially increasing flow resistance and/or noise.

Vapor recovery system purge valve and method

A vapor purge valve in an engine is provided. The vapor purge valve includes a purge valve inlet, a purge valve outlet, and a muffler including a housing at least partially enclosing a diffuser in fluidic communication with the purge valve inlet and the purge valve outlet.

Purge valve noise attenuation system and method

A high pressure fuel pump for use with an internal combustion engine and a method of operation of a high pressure fuel pump are disclosed. The high pressure fuel pump may include a supply chamber and a pump chamber separated by a passage in sealing arrangement with a disk. The disk may have one or more holes therethrough and be rotatable in order to place the holes in the disk in varying degrees of alignment with the passage to allow respective, varying amounts of fuel to flow through the passage.

High pressure fuel pump

An internal combustion engine direct injection fuel injector system includes a fuel rail which is welded to a fuel rail bracket. A fuel rail mounting sleeve has a flange and is bolted to the engine cylinder head. The bracket fits around the flange and is held in place by a steel washer and a pair of stepped isolator washers which are positioned in pockets formed on either side of the bracket. The isolator washers serve as springs which form a shock absorber between the bracket and cylinder head. Compression forces on the bracket and isolator washers are controlled by bolt tension.

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Inkster, MI, United States of America

Paul Zeng