Engine lubrication in cold start-up

Matti Kytö

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    1 Citation (Scopus)


    Simulated start-up tests were made in a cold chamber with two gasoline-fueled four-cylinder passenger car engines. The engine was motored with a hydraulic motor according to a certain test programme. The time required for the oil pressure to build up was measured on the camshaft bearing which is the most remote point of the lubrication system. The oil pressure in the smaller engine was also measured before and after the oil filter. The torque required for motoring the engine and the temperature of the oil, one main bearing and one camshaft bearing were also measured, in addition to the motoring tests, start-up tests were made with the other engine to get information about the correlation of the motoring test results with a start-up situation in practice. At ambient temperatures < 20 °C there were differences especially in the pumpability properties of oils even within the same viscosity class. Hence, the choice of oil and the use of auxiliary heaters are of great significance.
    Original languageEnglish
    Title of host publicationSubzero Engineering Conditions Conference Proceedings
    Place of PublicationWarrendale
    PublisherSociety of Automotive Engineers SAE
    ISBN (Print)978-0-8988-3484-0
    Publication statusPublished - 1989
    MoE publication typeA4 Article in a conference publication
    EventSubzero Engineering Conditions Conference 1989 - Rovaniemi, Finland
    Duration: 9 Jan 198911 Jan 1989

    Publication series

    SeriesSAE Technical Paper Series


    ConferenceSubzero Engineering Conditions Conference 1989


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