Performance and combustion characteristics of a novel crank-rocker engine

Mohammed, Salah E.; Baharom, Masri B.; Aziz, A. Rashid A.

doi:10.1007/s12206-017-0643-x

Cited by 13 publications

(7 citation statements)

References 1 publication

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“…One type of unconventional engine which was developed and tested is the crank-rocker engine. By application of the crank-rocker engine, it achieves 6.28% greater torque and power compare to the conventional slider-crank engine [15]. Other variant of engine with which are achieving better performances compare to the conventional engine is the Duke engine [16].…”

Section: The Analysis Of the Unconventional Piston Mechanism Concepti...mentioning

confidence: 99%

The Analysis of the Unconventional Piston Mechanism Conception and Comparison With the Conventional Piston Mechanism

Grujić¹,

Narayan²,

Stojanović³

2022

MVM

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The IC engines construction is usually neglected by the engineers, so because of this, the last few decades cannot notice big changes from the aspect of the construction of engine mechanical parts. The greatest accent was given to the reduction of the exhaust emission, and with this on the IC engines equipment improvement. In the paper was conducted the analysis of the unconventional piston mechanism, as well as the comparison with classic/conventional piston mechanism. Results show a many advantages from the aspect of IC engine construction, reliability, working cycle and performances, which can be achieved with IC engine with this piston mechanism, and small number of disadvantages, which easy can overcome.

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Section: The Analysis Of the Unconventional Piston Mechanism Concepti...mentioning

confidence: 99%

The Analysis of the Unconventional Piston Mechanism Conception and Comparison With the Conventional Piston Mechanism

Grujić¹,

Narayan²,

Stojanović³

2022

MVM

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“…This is because the piston is rigidly connected to the rocker arm using a bolt, and hence the piston will not deflect and slap against the cylinder wall during operation. The contact is only between the ring and the cylinder liner [7]. It can be noted that the friction between the piston and cylinder wall of the curve cylinder can be minimized.…”

Section: The Crank-rocker Engine Concept and Operating Principlementioning

confidence: 99%

“…However, the modellings and experimental works on toroidal engines can be rarely found in the literature. The only available information about the toroidal engines can only be found in patent documents [7].…”

Section: Simulation Model For Icesmentioning

confidence: 99%

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Modelling of Combustion Characteristics of a Single Curved-Cylinder Spark-Ignition Crank-Rocker Engine

et al. 2019

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A crank-rocker engine is a new invention used to convert oscillating motion from the curve-piston into the rotary motion of the crankshaft. The configuration of this new engine is different from the normal slider-crank engine, so the existing model used to calculate the combustion characteristic is not appropriate for this new engine. A fundamental thermodynamic model of a single curved-cylinder spark-ignition crank-rocker engine is presented. The model was simulated in MATLAB to predict the combustion characteristics at different operating conditions. The friction losses, residual gas fraction and combustion efficiency were introduced into the combustion model to improve the overall accuracy of the model. The developed model was used to analyze and evaluate the in-cylinder pressure, fuel burn rate, and heat release under various crank angle positions. To validate the predictions of the model, experimental tests were conducted on a single-cylinder crank-rocker engine at an engine speed of 2000 rpm, spark timing of 8.60 CA BTDC, full load and wide-open throttle (WOT) condition. Finally, the results were plotted and compared with the simulation results. The findings obtained from the current study have shown the ability of the simulation model to predict the combustion characteristics under different operating conditions. The agreement between the results of the present model and experimental data was reasonably good. This research work proposes a new model which can predict the behavior of the crank-rocker engine. The information gained from this study will aid in the tuning process and future development of this engine.

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“…Previous studies led to the invention of a new single piston engine called Crank Rocker (CR) engine by a research team at Centre for Automotive Research and Electric Mobility (CAREM), Universiti Teknologi Petronas (UTP) Malaysia [4]. Since then, the CR engine is under continuous investigation to achieve the most beneficial outcome from such design [4][5][6][7][8][9]. Although single piston design showed promising results in term of efficiency and indicated power, noticeable high vibrations during operation of the engine was noticed mainly due to the unbalance of engine.…”

Section: Introductionmentioning

confidence: 99%

Balancing and Simulation of a Double Crank-Rocker Engine Model for Optimum Reduction of Shaking Forces and Shaking Moments

Albaghdadi¹,

Baharom²,

Sualiman³

2021

MMEP

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In this paper, a new configuration of Crank-Rocker (CR) model has been proposed by duplicating its mechanism. The method has been implemented to overcome vibration problem on a single-piston Crank-Rocker engine caused by system unbalance. The new method suggests combining conventional method of adding counterweights to reduce shaking forces and eliminating the inertial moments on system by implementing the new layout. A dynamic study of the new model is presented, then the objective function is derived and implemented to perform the optimization process. Related design variables and system constraints are introduced to determine attached counterweights optimized characteristics. For results validation, the simulation, dynamic analysis, and optimization process were conducted using ADAMS VIEW® software. The output results were presented and discussed to verify the validity of the suggested method. It was noticed that the method was very effective and has managed to reduce the total shaking forces by about 91%, shaking moment by about 66%; and the driving torque by 27%.

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Performance and combustion characteristics of a novel crank-rocker engine

Cited by 13 publications

References 1 publication

The Analysis of the Unconventional Piston Mechanism Conception and Comparison With the Conventional Piston Mechanism

The Analysis of the Unconventional Piston Mechanism Conception and Comparison With the Conventional Piston Mechanism

Modelling of Combustion Characteristics of a Single Curved-Cylinder Spark-Ignition Crank-Rocker Engine

Balancing and Simulation of a Double Crank-Rocker Engine Model for Optimum Reduction of Shaking Forces and Shaking Moments

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