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Dive into the research topics where Mark A. Theobald is active.

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Featured researches published by Mark A. Theobald.


SAE International Congress and Exposition | 1989

Calculation of Flow in the Piston-Cylinder-Ring Crevices of a Homogeneous-Charge Engine and Comparison with Experiment

Tang-wei Kuo; Mark C. Sellnau; Mark A. Theobald; John Dewey Jones

A crevice-flow model that had been published in the literature was reconstructed and used to calculate flow in the crevices between the piston, the cylinder, and the rings in a homogeneous-charge engine. The code was then modified to run interactively with a more sophisticated ring-friction model developed previously for calculation of the film thickness of lubricating oil on the cylinder liner. This paper discusses the accuracy of this crevice-flow model evaluated with engine-blowby data taken from tests on a multicylinder engine.


Archive | 2007

Method of operating a plug-in hybrid electric vehicle

Eric M. Rask; Robert D. Burns; Mark A. Theobald


SAE transactions | 1994

Control of Engine Load via Electromagnetic Valve Actuators

Mark A. Theobald; Bruno Lequesne; Rassem R. Henry


Archive | 2005

Method and apparatus for engine torque disturbance reduction during cranking

David R. Lancaster; Mark G. Kosowski; Mark A. Theobald; James A. Cogswell Ii; Bryan R. Snyder; John P. Miller; David J. Ann Arbor Freiman


Archive | 2004

Powertrain with electrically variable transmission providing improved gradeability

Anthony P. Tata; Kyle K. Kinsey; Robert D. Burns; Brendan M. Conlon; Donald Paul Pfaff; Mark A. Theobald; Mark A. Damico


SAE 2002 World Congress & Exhibition | 2002

Aggregating Technologies for Reduced Fuel Consumption: A Review of the Technical Content in the 2002 National Research Council Report on CAFE

Kenneth J. Patton; Aaron M. Sullivan; Rodney B. Rask; Mark A. Theobald


Archive | 2007

HYBRID POWERTRAIN WITH REVERSING ENGINE AND METHOD OF CONTROL

Mark A. Theobald; Rodney B. Rask; Madhusudan Raghavan; Paul M. Najt; Alan G. Holmes; Norman K. Bucknor


Archive | 2011

Electric motor assembly with movable rotor segments to reduce back electromotive force

Peter J. Savagian; Alan G. Holmes; Mark A. Theobald


Archive | 2011

Electric vehicle with range-extending engine and climate control compressor

Mark A. Theobald; Edward D. Tate; Alan G. Holmes


Archive | 2008

Hybridantriebsstrang mit Umkehrmaschine und Steuerverfahren

Mark A. Theobald; Rodney B. Rask; Madhusudan Raghavan; Paul M. Najt; Alan G. Holmes; Norman K. Bucknor

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