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Dive into the research topics where Brendan M. Conlon is active.

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Featured researches published by Brendan M. Conlon.


SAE World Congress & Exhibition | 2007

Defining the General Motors 2-Mode Hybrid Transmission

Tim M. Grewe; Brendan M. Conlon; Alan G. Holmes

The new General Motors 2-Mode Hybrid transmission for full-size, full-utility SUVs integrates two electromechanical power-split operating modes with four fixed gear ratios and provides fuel savings from electric assist, regenerative braking and low-speed electric vehicle operation. A combination of two power-split modes reduces the amount of mechanical power that must be converted to electricity for continuously variable transmission operation. Four fixed gear ratios further improve power transmission capacity and efficiency for especially demanding maneuvers such as full acceleration, hill climbing, and towing. This paper explains the basics of electro-mechanical power-split transmissions, input-split and compound-split modes, and the addition of fixed gear ratios to these modes to create the 2-Mode Hybrid transmission for SUVs.


SAE transactions | 2005

Comparative Analysis of Single and Combined Hybrid Electrically Variable Transmission Operating Modes

Brendan M. Conlon

Electrically variable transmissions divide power between the electrical and mechanical paths using input, output, or compound split schemes. When combined with an electrical energy storage element such as a battery, these systems allow numerous fuel saving and performance benefits. This paper examines the design tradeoffs in each of the three topologies in order to balance fuel economy, system performance against requirements, and electrical component size. A general EVT analysis method is presented and used to study the fuel economy and performance sensitivity of the three configurations to motor, inverter, and battery constraints, and planetary gear ratios. To evaluate fuel economy, the three systems are assessed for each of the primary fuel economy mechanisms enabled by hybridization. To evaluate performance tradeoffs, system performance against typical vehicle performance design points is compared. The effects of combining two modes that are optimized for individual speed ranges vs. a single mode covering all ranges are also discussed. The use of 2 modes provides significant advantages over a single mode design including reduced motor power for a given vehicle performance.


Archive | 1995

Electric vehicle with regenerative and anti-lock braking

Kevin S. Kidston; Brendan M. Conlon


SAE International journal of engines | 2011

The GM “Voltec” 4ET50 Multi-Mode Electric Transaxle

Michael Andrew Miller; Alan G. Holmes; Brendan M. Conlon; Peter J. Savagian


Archive | 2007

Output Split Electrically-Variable Transmission with Electric Propulsion Using One or Two Motors

Brendan M. Conlon; Peter J. Savagian; Alan G. Holmes; Michael O. Harpster


Archive | 2007

Control system for a hybrid powertrain system

Brendan M. Conlon; Alan G. Holmes; Edward D. Tate; Eric M. Rask


Archive | 2005

Two mode electrically variable transmission with equal forward and reverse input-split modal performance

Donald Klemen; Michael R. Schmidt; Brendan M. Conlon


Archive | 2011

Highly configurable hybrid powertrain and control system therefor

Brendan M. Conlon; Alan G. Holmes; Edward D. Tate; Eric M. Rask


Archive | 2006

Input brake providing electric only fixed gear

Brendan M. Conlon; Alan G. Holmes; Michael R. Schmidt; Joel M. Maguire


Archive | 2007

THREE MODE ELECTRICALLY-VARIABLE TRANSMISSION

Alan G. Holmes; Michael R. Schmidt; Donald Klemen; Brendan M. Conlon

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Constantin C. Stancu

California Institute of Technology

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