An investigation of a hypocycloid mechanism based twin-rotor piston engine

Xiaojun Xu, Haijun Xu, Hao Deng, Fengshou Gu, Chris Talbot

Research output: Contribution to journalArticle

Abstract

A unique mechanism is investigated in this paper to show the working principles of a novel hypocycloid twin-rotor piston engine (HTRPE), which provides the basis for the structural design, kinematic and dynamical analysis necessary to realize the engine. As a critical system for the HTRPE, the differential velocity mechanism is examined first by decomposing it into two non-uniform motion mechanisms and one hypocycloid mechanism, which allows an evaluation of different options of design parameters. Then analytical expressions are derived to calculate the rotor angular velocities and the relative angular velocities of pairs of rotors for a detailed performance analysis. Based on the results of this analysis a prototype HTRPE is proposed and benchmarked with both a conventional reciprocating and a Wankel engine. It is shown that the new engine outperforms the other two engines in key engine features including combustion gas force transmission, volumetric change of working chambers, power frequency, piston velocity and displacement, demonstrating that HTRPE is very promising as a more energy efficient engine due to its high compactness and power density, and consequently lightweight design.
Original languageEnglish
Pages (from-to)106-115
Number of pages10
JournalProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Volume229
Issue number1
Early online date29 Apr 2014
DOIs
Publication statusPublished - 1 Jan 2015

Fingerprint

Engine pistons
Rotors
Engines
Angular velocity
Wankel engines
Structural design
Pistons
Kinematics
Gases

Cite this

@article{af496effe4544b1693183315571caeb3,
title = "An investigation of a hypocycloid mechanism based twin-rotor piston engine",
abstract = "A unique mechanism is investigated in this paper to show the working principles of a novel hypocycloid twin-rotor piston engine (HTRPE), which provides the basis for the structural design, kinematic and dynamical analysis necessary to realize the engine. As a critical system for the HTRPE, the differential velocity mechanism is examined first by decomposing it into two non-uniform motion mechanisms and one hypocycloid mechanism, which allows an evaluation of different options of design parameters. Then analytical expressions are derived to calculate the rotor angular velocities and the relative angular velocities of pairs of rotors for a detailed performance analysis. Based on the results of this analysis a prototype HTRPE is proposed and benchmarked with both a conventional reciprocating and a Wankel engine. It is shown that the new engine outperforms the other two engines in key engine features including combustion gas force transmission, volumetric change of working chambers, power frequency, piston velocity and displacement, demonstrating that HTRPE is very promising as a more energy efficient engine due to its high compactness and power density, and consequently lightweight design.",
keywords = "Hypocycloid mechanism, piston engine, Wankel engine, power density, internal combustion engine",
author = "Xiaojun Xu and Haijun Xu and Hao Deng and Fengshou Gu and Chris Talbot",
note = "How should I affiliate Chris Talbot? On the uni address book as an 'affiliate'. SH 2/8/17.",
year = "2015",
month = "1",
day = "1",
doi = "10.1177/0954406214532632",
language = "English",
volume = "229",
pages = "106--115",
journal = "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science",
issn = "0954-4062",
publisher = "SAGE Publications Ltd",
number = "1",

}

An investigation of a hypocycloid mechanism based twin-rotor piston engine. / Xu, Xiaojun; Xu, Haijun; Deng, Hao; Gu, Fengshou; Talbot, Chris.

In: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 229, No. 1, 01.01.2015, p. 106-115.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An investigation of a hypocycloid mechanism based twin-rotor piston engine

AU - Xu, Xiaojun

AU - Xu, Haijun

AU - Deng, Hao

AU - Gu, Fengshou

AU - Talbot, Chris

N1 - How should I affiliate Chris Talbot? On the uni address book as an 'affiliate'. SH 2/8/17.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A unique mechanism is investigated in this paper to show the working principles of a novel hypocycloid twin-rotor piston engine (HTRPE), which provides the basis for the structural design, kinematic and dynamical analysis necessary to realize the engine. As a critical system for the HTRPE, the differential velocity mechanism is examined first by decomposing it into two non-uniform motion mechanisms and one hypocycloid mechanism, which allows an evaluation of different options of design parameters. Then analytical expressions are derived to calculate the rotor angular velocities and the relative angular velocities of pairs of rotors for a detailed performance analysis. Based on the results of this analysis a prototype HTRPE is proposed and benchmarked with both a conventional reciprocating and a Wankel engine. It is shown that the new engine outperforms the other two engines in key engine features including combustion gas force transmission, volumetric change of working chambers, power frequency, piston velocity and displacement, demonstrating that HTRPE is very promising as a more energy efficient engine due to its high compactness and power density, and consequently lightweight design.

AB - A unique mechanism is investigated in this paper to show the working principles of a novel hypocycloid twin-rotor piston engine (HTRPE), which provides the basis for the structural design, kinematic and dynamical analysis necessary to realize the engine. As a critical system for the HTRPE, the differential velocity mechanism is examined first by decomposing it into two non-uniform motion mechanisms and one hypocycloid mechanism, which allows an evaluation of different options of design parameters. Then analytical expressions are derived to calculate the rotor angular velocities and the relative angular velocities of pairs of rotors for a detailed performance analysis. Based on the results of this analysis a prototype HTRPE is proposed and benchmarked with both a conventional reciprocating and a Wankel engine. It is shown that the new engine outperforms the other two engines in key engine features including combustion gas force transmission, volumetric change of working chambers, power frequency, piston velocity and displacement, demonstrating that HTRPE is very promising as a more energy efficient engine due to its high compactness and power density, and consequently lightweight design.

KW - Hypocycloid mechanism

KW - piston engine

KW - Wankel engine

KW - power density

KW - internal combustion engine

U2 - 10.1177/0954406214532632

DO - 10.1177/0954406214532632

M3 - Article

VL - 229

SP - 106

EP - 115

JO - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

JF - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

SN - 0954-4062

IS - 1

ER -