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Featured researches published by Roger Joseph Rademacher.


SAE transactions | 2005

Ecotec 2.4L VVT : A variant of GM's global 4-cylinder engine

Peter H. Dugdale; Roger Joseph Rademacher; Bruce R. Price; Jay W. Subhedar; Roger L. Duguay

General Motors adds a larger displacement more powerful variant to its global 4-cylinder engine family. The new Ecotec 2.4L VVT, being introduced in the 2006 Pontiac Solstice is the latest variant within the Ecotec engine family. This new engine is built on the heritage and excellent reputation of the Ecotec 2.2L (1) , the global 4-cylinder engine introduced for the North American market in the 2000 model year Saturn L-series. Ecotec engines are now offered in many additional GM platforms in North America as well as in Europe. The Ecotec 2.4L VVT shares many parts with the Ecotec 2.2L (1) , with addition of cam phaser technology to enable variable valve timing (VVT) along with several structural enhancements. The Ecotec 2.4L VVT produces 25% more power, impressive torque at lower engine speeds and offers a number of other advantages. Production of the Ecotec 2.4L VVT is integrated with the Ecotec 2.2L (1) resulting in efficient use of the manufacturing systems already in place, at the same time providing flexibility to split the production volumes for the two engines based on the demand.


Archive | 1995

Fuel cap tether apparatus

Shelly L. Lienhart; Roger Joseph Rademacher


SAE International Journal of Alternative Powertrains | 2012

Development of General Motors' eAssist Powertrain

Shawn Scott Hawkins; Fred Billotto; Daniel Cottrell; Alan Houtman; Stephen Poulos; Roger Joseph Rademacher; Keith D. Van Maanen; Daryl Wilson


Archive | 2010

NEGATIVE-TORQUE DOWNSHIFT EXECUTION FOR FIXED-GEAR TRANSMISSIONS

Craig J. Hawkins; Adam J. Heisel; Christopher E. Whitney; Matthew D. Whitton; Roger Joseph Rademacher; Keith D. Van Maanen


Archive | 2009

Auxiliary pump diagnostic systems and methods

William L. Aldrich; Steven A. West Bloomfield Tarnowsky; Michael E. Polom; Roger Joseph Rademacher; Donald D. Crites; Keith D. Van Maanen; Brian M. Novi Porto; Michael Farmington Hills Chernyak


Archive | 2010

Hilfspumpendiagnosesysteme und -verfahren

Iii. William L. Davisburg Aldrich; Michael Farmington Hills Chernyak; Donald D. Crites; Keith D. van Birmingham Maanen; Michael E. Polom; Brian M. Novi Porto; Roger Joseph Rademacher; Steven A. West Bloomfield Tarnowsky


Archive | 2014

Transmission oil pressure control during the automatic engine start

Keith D. Van Maanen; Roger Joseph Rademacher; Craig J. Hawkins


Archive | 2014

Getriebeöldrucksteuerung während des automatischen Kraftmaschinenstarts Transmission oil pressure control during the automatic engine start

Keith D. Van Maanen; Roger Joseph Rademacher; Craig J. Hawkins


Archive | 2011

Ausführung eines Herunterschaltvorgangs bei negativem Drehmoment für Getriebe mit diskreten Gängen Execution of a downshift with a negative torque transmission with discrete transitions

Craig J. Hawkins; Adam J. Heisel; Roger Joseph Rademacher; Keith D. Van Maanen; Christopher E. Whitney; Matthew D. Whitton


Archive | 2011

Executing a down-shift operation with a negative torque transmission with discrete gears

Craig J. Hawkins; Adam J. Heisel; Roger Joseph Rademacher; Keith D. Van Maanen; Christopher E. Whitney; Matthew D. Whitton

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