Engine friction-Effect of oil viscosity and break-in on cranking resistance

Sanvordenker, K

Title: Engine friction-Effect of oil viscosity and break-in on cranking resistance

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Abstract

A simple technique of tracing the deaccelaration of an engine upon shut off is used to determine the cranking resistance of small single cylinder utility engines under different ambient conditions. The technique is also used to differentiate the frictional losses from the mechanical losses during cranking, without the aid of a dynamometer. Viscosity of the crankcase oil is found to be the single most important property of the oil which correlates with cranking resistance. Considerable improvement in crankability can be attained by polishing of the engine bore, but only at the risk of increased wear under normal operating conditions.

Authors:: Sanvordenker, K

Publication Date:: Sun Jan 01 00:00:00 EST 1984

OSTI Identifier:: 5911199

Report Number(s):: SAE-TP-841095

Resource Type:: Book

Country of Publication:: United States

Language:: English

Subject:: 33 ADVANCED PROPULSION SYSTEMS; 02 PETROLEUM; INTERNAL COMBUSTION ENGINES; FRICTION; LUBRICATING OILS; VISCOSITY; ACCELERATION; CYLINDERS; ENERGY LOSSES; IGNITION QUALITY; MECHANICAL EFFICIENCY; POLISHING; ROUGHNESS; WEAR RESISTANCE; EFFICIENCY; ENGINES; HEAT ENGINES; LOSSES; LUBRICANTS; MECHANICAL PROPERTIES; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PETROLEUM PRODUCTS; SURFACE FINISHING; SURFACE PROPERTIES; 330100* - Internal Combustion Engines; 023000 - Petroleum- Properties & Composition

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                    Sanvordenker, K. Engine friction-Effect of oil viscosity and break-in on cranking resistance.  United States: N. p., 1984. 
        Web.

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                    Sanvordenker, K. Engine friction-Effect of oil viscosity and break-in on cranking resistance.  United States.

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                    Sanvordenker, K. 1984.  
        "Engine friction-Effect of oil viscosity and break-in on cranking resistance".  United States.

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@article{osti_5911199,

  title        = {Engine friction-Effect of oil viscosity and break-in on cranking resistance},

  author       = {Sanvordenker, K},

  abstractNote = {A simple technique of tracing the deaccelaration of an engine upon shut off is used to determine the cranking resistance of small single cylinder utility engines under different ambient conditions. The technique is also used to differentiate the frictional losses from the mechanical losses during cranking, without the aid of a dynamometer. Viscosity of the crankcase oil is found to be the single most important property of the oil which correlates with cranking resistance. Considerable improvement in crankability can be attained by polishing of the engine bore, but only at the risk of increased wear under normal operating conditions.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5911199},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1984},

  month        = {Sun Jan 01 00:00:00 EST 1984}

}

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