Robert M Hurst

US Patent:

6561157, May 13, 2003

Filed:

May 8, 2001

Appl. No.:

09/850189

Inventors:

Axel O zur Loye - Columbus IN
Larry J Brackney - Columbus IN
Cariappa M Chenanda - Columbus IN
Robert M Hurst - Columbus IN
Lester L Peters - Columbus IN
Patrick M Pierz - Columbus IN
John F Wright - Columbus IN

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02B 1700

US Classification:

123295, 123299, 123305, 123435

Abstract:

A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.

US Patent:

6659071, Dec 9, 2003

Filed:

May 8, 2001

Appl. No.:

09/850187

Inventors:

Leon A. LaPointe - Columbus IN
Cariappa M. Chenanda - Columbus IN
Tim R. Frazier - Columbus IN
Robert M. Hurst - Columbus IN
Lester L. Peters - Columbus IN
Patrick M. Pierz - Columbus IN
Axel O. zur Loye - Columbus IN

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02B 1700

US Classification:

123299, 123305, 123431, 123295

Abstract:

An internal combustion engine operable in a premixed charge compression ignition mode and a method for operating the engine, the engine including an engine body with a piston assembly, a combustion chamber formed in the engine body by the piston assembly, an intake system for delivering intake air to the combustion chamber during an intake stroke, a mixing device that mixes a first fuel with the intake air to provide a premixed charge of air and the first fuel, a direct fuel injector adapted to directly inject a second fuel into the combustion chamber, and a control system adapted to control the direct fuel injector in a manner to provide at least one early control injection, and preferably, a plurality of early control injections of the second fuel into the combustion chamber before start of combustion of the premixed charge.

US Patent:

6684849, Feb 3, 2004

Filed:

Mar 14, 2003

Appl. No.:

10/387579

Inventors:

Axel O. zur Loye - Columbus IN
Larry J. Brackney - Columbus IN
Cariappa M. Chenanda - Columbus IN
Robert M. Hurst - Columbus IN
Lester L. Peters - Columbus IN
Patrick M. Pierz - Columbus IN
John F. Wright - Columbus IN

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02B 1700

US Classification:

123295, 123299, 123304, 123305

Abstract:

A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.

US Patent:

6907870, Jun 21, 2005

Filed:

Jan 23, 2004

Appl. No.:

10/762354

Inventors:

Axel O. zur Loye - Columbus IN, US
Larry J. Brackney - Columbus IN, US
Cariappa M. Chenanda - Columbus IN, US
Robert M. Hurst - Columbus IN, US
Lester L. Peters - Columbus IN, US
Patrick M. Pierz - Columbus IN, US
John F. Wright - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02P001/00

US Classification:

123594R, 123 901, 123 27 R, 123435

Abstract:

A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.