even in water-pg电子下载

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even in water-cooled engines also play a roll
time: 2011-08-25 10:25:30 from:www.zihyd.com auhor:hydraulic steering click:2134

even in water-cooled engines also play a roll

just about every one knows that the primary function of motor oil, or any lubricant for that matter, is to provide a barrier between moving parts, preventing friction and wear. our company is professional hydraulic motor,piston motor,hydraulic winch,gearbox,pg电子下载-pg电子游戏supplier providing customers from domestic zhongyiyepk and overseas the best and reliable hydraulic products.welcome to visit our website.
in a modern engine though oil must do a lot more than that!

moving parts that constantly change direction such as the reciprocating motion of the pistons and connecting rods create a certain amount of shock from the load transfer when it changes directions. the pistons and rods in an engine that is running a constant 3000-rpm, say cruising at highway speed are changing direction 50 times per second. the pistons and connecting rods in a high performance engine turning 10,000 rpm are changing direction a staggering 166 times per second!

the motor oil along with its anti wear additives must cushion the blow. the oils film is there to absorb and disperse the energy over the load bearing surface preventing metal-to-metal contact.

motor oil; even in water-cooled engines also play a roll in keeping the engine cool. the oil absorbs engine heat and transfers it away from hot engine parts. the oil splashing up into the cylinder not only lubricates the pistons rings moving against the cylinder wall but also carries heat away from the back of the piston moving it to a location that it can be dissipated.

oil slashing up into the cylinders also acts as a dynamic seal where the piston rings contact the cylinder both lubricating and preventing hot combustion by-products from getting past the rings and contaminating the oil.

no small part of a oils job in preventing wear is its ability to keep the engine clean. detergents and dispersants in the oil keep contaminants from adhering to engine surfaces and suspended preventing them for removal by the engines oil filter.

condensate that forms in the oil at night or during extended non-use of the vehicle can cause rust and corrosion, as can acids and combustion by-products

by acting as a barrier between engine components and by chemically neutralizing corrosive combustion by-products motor oils prevent rust and corrosion and the accelerated wear that goes with it.

motor oil must also transfer energy in some engines that utilize hydraulically actuated valve lifters. this has become fairly common in diesel engines.

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