🌐EnglishEnglishDeutschItalianoРусскийالعربيةفارسی中文日本語EntityQ1824163· pop 10· linked from 119 articlesvolumetric efficiencyratio of the mass density of a mixture drawn into a cylinder at atmospheric pressure to the mass density of the same volume of air in the intake manifoldAvailable in 10 languagesDeutsch中文日本語РусскийItalianoالعربيةSardinianSlovakفارسیvia Wikidata sitelinks · CC0Connectionsconstant speed propellerEntityoverhead-camshaft valvetrainEntityCategoriesEngineering ratiosEngine technologyTwo-stroke engine technology