John L Niebrzydoski

US Patent:

53159683, May 31, 1994

Filed:

Mar 29, 1993

Appl. No.:

8/038828

Inventors:

John L. Niebrzydoski - Cass City MI

Assignee:

Orbital Walbro Corporation - Cass City MI

International Classification:

F02B 3304
F04B 104

US Classification:

123 73C

Abstract:

A two-stage fuel delivery system for an internal combustion engine that includes a first stage pump having a first pump chamber with an inlet coupled to a fuel source, an outlet and a diaphragm responsive to pressure pulsations from the engine crankcase for reciprocation within the chamber. A second stage pump includes a second pump chamber having an inlet coupled to the outlet of the first chamber, an outlet for delivering fuel under pressure to engine fuel injectors or the like, a permanent magnet for mounting on the flywheel of the engine for rotation in synchronism with operation of the engine, and a diaphragm in the second chamber operatively coupled to the magnet for reciprocation with the second chamber responsive to rotation of the magnet to pump fuel from the inlet to the outlet of the second chamber. The two-stage pump achieves fuel delivery pressures on the order of 25 to 30 psi or more employing energy from reciprocation of the engine and without requiring control electronics or electrical energy input.

US Patent:

53986547, Mar 21, 1995

Filed:

Apr 4, 1994

Appl. No.:

8/222439

Inventors:

John L. Niebrzydoski - Cass City MI

Assignee:

Orbital Fluid Technologies, Inc. - Cass City MI

International Classification:

F02M 700
F02B 3304

US Classification:

123445

Abstract:

A fuel injection system that includes an injector having a pintle movable within a housing for selectively opening and closing communication between inlet and outlet ports in the housing. The inlet port is connected to a source of fuel under pressure, while the outlet port is connected to a nozzle for delivering fuel under pressure to the engine. A section of magnetic material is coupled to the pintle, and a permanent magnet is mounted on the engine flywheel, such that magnetic forces imparted as the permanent magnet moves therepast moves the pintle against a spring to open communication between the inlet and outlet ports, and thereby deliver fuel under pressure from the source to the nozzle. A cam mechanism is rotatably positioned within the pintle housing and operatively coupled to the pintle for adjustably varying stroke of the pintle within the housing, and thereby varying time duration during which the injector opens communication between the fuel source and the nozzle.