Rotary Engine Performance Limits Predicted by a Zero-Dimensional Model

Bartrand, Timothy A.; Willis, E. A.

doi:10.4271/920301

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…This causes less torque variation and differences in the flow field, which results in smooth operation. By comparison of torque variation of the rotary engine with other reciprocating engines, Timothy et al 54 predicted the limitations of the rotary engine performance to answer whether speeding up the combustion always improve performance, and shown that a fast combustion does not necessary increase combustion rate. An eight-cylinder reciprocating (V8) engine is shown to be likely smoother as the rotary engine.…”

Section: Rotary Engine Operation Performance Comparisonmentioning

confidence: 99%

Combustion Chamber Design Effect on The Rotary Engine Performance - A Review

Boughou

Mohiuddin

2020

IJAE

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Comparatively, this review is meant to focus on possible developments studies of the rotary engine design. The controversial engine produces a direct rotational motion. Felix Wankel derived the triangular rotor shape from complex geometry of the Reuleaux triangle. The Wankel engine simulation and prediction of its performance is still limited. The current work reviews rotary engine's flow field inside the combustion chamber with different commercial software used. It studies different parameters effect on the performance of the engine, such as the effect of the recess sizes and the shape-factor. It is found that the engine chambers design is one of the aspects of improvement opportunities.

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Section: Rotary Engine Operation Performance Comparisonmentioning

confidence: 99%

Combustion Chamber Design Effect on The Rotary Engine Performance - A Review

Boughou

Mohiuddin

2020

IJAE

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“…Thus, RTEs have considerably fewer separate parts and are significantly smaller than REs for the same power output, which is advantageous for small-scale production. The Wankel engine (WE), developed in the early 1960s [4], is a representative RTE with practical advantages and disadvantages relative to REs [5,6]. Advantages include simple structure, low friction loss, a high power-to-weight ratio, favorable for high-speed rotation, and small vibration and torque fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design for New Rotary Engine with Geometric Shape Functions on Combustion Chamber and Ports

Kim,

Park,

Yang

et al. 2024

Energies

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This study presents an optimal design for a new rotary engine. Instantaneous shape functions were applied to the combustion chamber, and intake and exhaust ports were derived based on the rotor and housing design functions; then optimized design parameters were derived for a rotary engine. The three main parameters were shape distance, eccentric distance and rotor thickness. The design process for the optimized internal shape was subsequently defined considering target specifications for the rotary engine, and a prototype engine was designed and fabricated with a 336 cm3 intake volume. The compression pressure for the prototype engine was compared with the motoring test and calculated. These outcomes confirmed the new engine’s feasibility, and the derived geometric shape functions will be helpful to ensure optimal design for rotary engines using one- or three-dimensional computational fluid dynamics.

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Development of a Simulation Model for a New Rotary Engine to Optimize Port Location and Operating Conditions Using GT-POWER

Kim,

Park,

Park

et al. 2024

Energies

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The objective of this study is to develop a 1D CFD simulation model to identify the optimal design parameters, using GT-POWER prior to the optimization of a new rotary engine derived from a three-lobe gerotor pump (GP3 RTE) based on 3D CFD simulation. The models were compared based on their respective development stages (steps 1–4) to ascertain the impact of each parameter on performance. The step 4 model, which exhibited a similar trend to that observed in the 3D CFD results, was selected for further analysis and validation. The developed model accurately predicted GP3 RTE performance in terms of fuel consumption, indicated power, efficiency, and exhaust gas reticulation (EGR) behavior, approaching the accuracy of the CONVERGE model. Furthermore, the optimal intake/exhaust port locations and operating conditions of the GP3 RTE were derived using the developed step 4 model. The model provided a convenient and powerful tool for obtaining basic information regarding the unique behavior of the GP3 RTE, thereby enabling the optimization of the design parameters without the necessity for time-consuming three-dimensional design modifications.

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Rotary Engine Performance Limits Predicted by a Zero-Dimensional Model

Cited by 5 publications

References 10 publications

Combustion Chamber Design Effect on The Rotary Engine Performance - A Review

Combustion Chamber Design Effect on The Rotary Engine Performance - A Review

Optimal Design for New Rotary Engine with Geometric Shape Functions on Combustion Chamber and Ports

Development of a Simulation Model for a New Rotary Engine to Optimize Port Location and Operating Conditions Using GT-POWER

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