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2026. 6. 30. 작업

난이도 & 준비물

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5-Stroke Engines - What are these things?

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What is a 5 stroke engine? They tend to consist of only three cylinders rather than the more traditional 4 stroke, 4 cylinder engines that many people are using today. There are two small small high-pressure cylinders and one larger low-pressure cylinder. This video has some good information and animations. Why aren't they using them in vehicles right now? PROS A secondary cylinder provides an additional expansion process enabling extra work to be extracted, which results in better thermodynamic efficiency (which means less thermal energy is wasted, hence the engine efficiency must increase) 5 stroke engines tend to be quite small as the firing (smaller) cylinders can be very highly rated The engine uses 100% conventional technology and so requires no new manufacturing techniques as such Intended to increase engine efficiency Intended to reduce emissions and fuel consumption A few reasons as far as I can tell: CONS Increased manufacturing costs due to the fact that it is not widely ado