This study investigates the incorporation of an “enhanced” hypocycloid gear mechanism (HGM) in the design and development of internal combustion engine applications. The design incorporates a uniquely geared drive that provides the means for the piston–rod assembly to transverse on a straight-line, while delivering sinusoidal profiles for piston velocity and acceleration. A further feature of this mechanism is that the pinion shafts allow for a variable leverage point between the planetary carrier assembly and the output. This characteristic provided a nonlinear rate of piston movement because of the elliptical path of the pivot around the axis of the output shaft, which by slowing down the piston movement at the top dead center (TDC) allows the truly constant-volume combustion to take place and leads to higher efficiency and higher work produced. The simulation results of the study showed that the hypocycloid gear engine produced higher in-cylinder pressure at TDC compared to the conventional slider–crank engine of the same size.
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December 2016
Design Innovation Paper
Enhanced Hypocycloid Gear Mechanism for Internal Combustion Engine Applications
ELsayed S. Aziz,
ELsayed S. Aziz
Associate Professor
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ 07030;
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ 07030;
Production Engineering and
Mechanical Design Department,
Mansoura University,
Mansoura 35516, Egypt
e-mail: eaziz@stevens.edu
Mechanical Design Department,
Mansoura University,
Mansoura 35516, Egypt
e-mail: eaziz@stevens.edu
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Constantin Chassapis
Constantin Chassapis
Professor
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ, 07030
e-mail: cchassap@stevens.edu
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ, 07030
e-mail: cchassap@stevens.edu
Search for other works by this author on:
ELsayed S. Aziz
Associate Professor
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ 07030;
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ 07030;
Production Engineering and
Mechanical Design Department,
Mansoura University,
Mansoura 35516, Egypt
e-mail: eaziz@stevens.edu
Mechanical Design Department,
Mansoura University,
Mansoura 35516, Egypt
e-mail: eaziz@stevens.edu
Constantin Chassapis
Professor
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ, 07030
e-mail: cchassap@stevens.edu
Mechanical Engineering Department,
Stevens Institute of Technology,
Hoboken, NJ, 07030
e-mail: cchassap@stevens.edu
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received July 28, 2015; final manuscript received July 26, 2016; published online September 19, 2016. Assoc. Editor: David Myszka.
J. Mech. Des. Dec 2016, 138(12): 125002 (9 pages)
Published Online: September 19, 2016
Article history
Received:
July 28, 2015
Revised:
July 26, 2016
Citation
Aziz, E. S., and Chassapis, C. (September 19, 2016). "Enhanced Hypocycloid Gear Mechanism for Internal Combustion Engine Applications." ASME. J. Mech. Des. December 2016; 138(12): 125002. https://doi.org/10.1115/1.4034348
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