Daniel L Morin

US Patent:

59132396, Jun 15, 1999

Filed:

Jun 17, 1997

Appl. No.:

8/877303

Inventors:

Corydon E. Morris - Columbus IN
Daniel L. Morin - North Vernon IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

G01M 1500

US Classification:

731182

Abstract:

A gas mass flow sensor for sensing the flow of a gas to an internal combustion engine including a main flow passage having an inlet and an outlet for directing a gas flow to the internal combustion engine with the inlet communicating with a source of the gas and an outlet communicating with the internal combustion engine. A secondary flow passage for isolating a portion of the gas flow from the main flow passage is provided with the secondary flow passage including an inlet surrounding the main flow passage and a flow sensing section. Positioned within the flow sensing section of the secondary flow passage is a gas mass flow sensor for sensing the mass flow of gas through the secondary passage which is indicative of the mass flow through the main flow passage. Positioned within the main flow passage is a nozzle with the nozzle including a nozzle inlet and nozzle outlet wherein the outer diameter of the nozzle inlet is less than an inner diameter of the main flow passage with the inlet of the secondary flow passage being in the form of an annulus between the nozzle inlet and the main flow passage. The mass flow sensor may be incorporated into a unitary mass flow sensing and mixing module for sensing a flow of both air and fuel as well as for mixing the air and fuel together for delivery to an internal combustion engine.

US Patent:

59084758, Jun 1, 1999

Filed:

Jan 2, 1996

Appl. No.:

8/581961

Inventors:

Corydon E. Morris - Columbus IN
Daniel L. Morin - North Vernon IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

B01F 302

US Classification:

481893

Abstract:

A gas/air mixer for injecting gas into the intake air stream of an internal cumbustion engine using a combination of radial holes and radial tubes located around the perimeter of an air flow passage. The gas/air mixer includes an intake air passage which has a combination of radial holes and radial tubes arranged so that the gas is injected into the air stream. The gas passage contains gas which is at a higher pressure than the intake air. The gas flows around an annulus which distributes the gas to all the radial holes and radial tubes. The size of the intake air passage, the number and size of the radial holes, and the number, size and length of the radial tubes can be varied in any combination to achieve adequate gas/air mixing for the particular engine application. This combination can even include a device that contains all radial holes or all radial tubes. The distance that the gas is injected into the air stream is small at the radial holes and larger at the radial tubes.