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The rotary engine has a higher power-to-weight ratio and lower noise, vibration and harshness compared to conventional reciprocating engines, although performs less efficiently.
The analysis results for the heat release rates in the two separate chambers reveal some very interesting features, which aid the correct interpretation of the combustion mechanisms associated with this type of engine, over a wide spectrum of load and speed conditions.
Measurements in fired engine operation demonstrate the influence of the flow field on combustion dynamics.
This engine has unique features of dual sequential ignition with variable timing, asymmetrical combustion chamber, and diagonally positioned spark-plugs.
Investigations of various combustion chamber configurations have shown that, with regard to NO x -emissions, the divided combustion chamber comprising a main chamber and a prechamber is preferable.
Journal ArticleDOI
01 Jun 1934
28 Citations
The most important conclusion is this, that with the combustion system in question there is an optimum “swirl ratio,” or number of revolutions of the vane per minute divided by the number of revolutions of the engine per minute which gives the best performance, whatever the engine size, speed, or load, and which is, in fact, characteristic of that combustion system.
Journal ArticleDOI
01 Jan 2011
46 Citations
The present work also demonstrated the feasibility of LES to study complex flow features which are typical of gas-turbine combustion chambers.
Cycles also appear to be coupled: combustion during cycle N directly affects cycle (N+1), more than in a piston engine.
It was shown that the H2-fueled rotary engine with the dual laser ignition system has potential application in alternative automotive industry due to high efficiency and near-zero carbon-based emission.
The service life of the rotary engine would appear to correspond with that of the reciprocating engine.
These correlations, though useful, do not model the flow physics in the rotary engine faithfully.
The results enrich the theoretical studies of the rotary engine and provide some guidelines for practical devices.
Unsuccessful and successful ignition sequences have been simulated and the results suggest that spark ‘size’ is an important parameter in the ignition of kerosene fuelled combustion chambers.
One of the solutions is supplying water into the combustion chambers of diesel engines—the solution widely known for many years n ow wins favour and, according to the authors, has a chance to gain competitive advantage over alternative constructions.
The results presented in this article extend our understanding of the mechanisms underlying the global ignition behavior of non-premixed annular combustion chambers.
The analysis results using the computer models indicate that the proposed rotary engine should be able to generate substantially higher bmep than the engines available in the market if the proposed engine is able to operate as intended.
The results shown that the CAI combustion can be readily achieved in the 2-stroke cycle of a poppet valve engine and the range of CAI combustion can be significantly extended compared to the 4-stroke cycle operation.

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