In the present study, the applicability of a combined Stirling and Otto cycle power plant where a Stirling cycle engine would serve as a bottoming cycle for a stationary Otto cycle engine is investigated.
A fuel efficiency advantage of 5→10% compared to a standard Otto cycle engine appears possible, however it is stated that further investigations, in particular into the topic of engine friction, are required in order to validate the findings.
The Miller cycle engine is compared to a standard Otto cycle engine using cycle analyses and multidimensional simulation, and basic engine design implications are discussed.
To demonstrate the benefits of the VCR Atkinson cycle engine over conventional Otto cycle engine, in the presence of auxiliary loads and uncertain road loads, its EMVEM model is simulated by using a precisely tuned super-twisting controller having similar specifications as that of the conventional gasoline engine.
The resulting approach confirms the significant decline in engine part load losses and improvement in the thermal efficiency and, accordingly, exhibits considerable enhancement in the fuel economy of the VCR Atkinson cycle engine over Otto cycle engine during the wide operating range.
The Atkinson cycle engines have larger expansion ratio, thus higher thermal efficiency, which are more suitable for the hybrid fuel-electric vehicles than the conventional Otto cycle engines.
Fuel-grade ethanol, produced from biomass, has been considered as a suitable automotive fuel for nearly a century, particularly for vehicles equipped with spark-ignition engines (technically referred to as Otto cycle engines, but commonly known as gasoline engines).
The aim of this study was to investigate the feasibility of utilising a Stirling cycle engine as an exhaust gas waste heat recovery device for an Otto cycle internal combustion engine (ICE) in the context of an automotive power plant.
But they are not the only answer to the fuel-economy question.Rudolf to the rescueOne effect of the 1970s oil shock was to encourage people to buy cars with diesel engines, which are usually more efficient than Otto-cycle engines.
You can rebore a two cycle engine just once.
