About: Oil pressure

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Oil pressure is an important factor in the longevity of most internal combustion engines. With a forced lubrication system (invented by Frederick Lanchester), oil is picked up by a positive displacement oil pump and forced through oil galleries (passageways) into bearings, such as the main bearings, big end bearings and camshaft bearings or balance shaft bearings. Other components such as cam lobes and cylinder walls are lubricated by oil jets.

Attributes	Values
rdfs:label	Oil pressure 油壓
rdfs:comment	油压是在大多数内燃机的寿命的重要因素。使用强制润滑系统（由Frederick兰彻斯特发明的），油被一个正排量抽出，被迫通过回油孔（通道）进入轴承，如主轴承，大的端部和凸轮轴轴承或平衡轴轴承。其它组分如凸轮凸角和汽缸壁由油喷射润滑。足够的油压保证的旋转轴（轴颈）金属与轴瓦不会接触，因此磨损仅限于初始启动和关闭。油压力结合轴的旋转，同时液压集中在其外壳的并冷却轴承。这种轴承被称为一个流体轴承。当发动机因为油的黏度而增加时，油压力会升高，同时发动机的转速也会增加，直到安全阀打开油泵转移过剩的流动。油压低于热怠速条件和制造商所允许的最小压力，通常在此点给出。过多的油压力可能表明过滤器堵塞、堵塞油道或错级油。低油压指示轴承的磨损或油泵的损坏。所有发动机有一个油压开关，开关在低油压的。一些车辆的仪表板或仪表盘上的拥有油用于显示油压。 Oil pressure is an important factor in the longevity of most internal combustion engines. With a forced lubrication system (invented by Frederick Lanchester), oil is picked up by a positive displacement oil pump and forced through oil galleries (passageways) into bearings, such as the main bearings, big end bearings and camshaft bearings or balance shaft bearings. Other components such as cam lobes and cylinder walls are lubricated by oil jets.
foaf:depiction
foaf:isPrimaryTopicOf	wikipedia-en:Oil_pressure
thumbnail	wiki-commons:Special:FilePath/Murphy_oil_pressure_switch_gauges.jpeg?width=300
dct:subject	Engine lubrication systems Engine technology
Wikipage page ID	6429006(xsd:integer)
Wikipage revision ID	868423953(xsd:integer)
Link from a Wikipage to another Wikipage	Pressure measurement Oil pump (internal combustion engine) Bearing (mechanical) Main bearing Balance shaft Lubrication Frederick W. Lanchester Engine lubrication systems Engine technology Camshaft Crankpin Viscosity Dashboard Internal combustion engine Pressure switch
Link from a Wikipage to an external page	http://www.aa1car.com/library/us1097.htm
sameAs	Oil pressure Oil pressure Oil pressure Oil pressure Oil pressure
dbp:wikiPageUsesTemplate	dbt:Unreferenced
has abstract	Oil pressure is an important factor in the longevity of most internal combustion engines. With a forced lubrication system (invented by Frederick Lanchester), oil is picked up by a positive displacement oil pump and forced through oil galleries (passageways) into bearings, such as the main bearings, big end bearings and camshaft bearings or balance shaft bearings. Other components such as cam lobes and cylinder walls are lubricated by oil jets. Sufficient oil pressure ensures that the metal of the rotating shaft (journal) and the bearing shell can never touch, and wear is therefore confined to initial start-up and shutdown. The oil pressure, combined with the rotation of the shaft, also hydrodynamically centers the journal in its shell and cools the bearings. Such a bearing is known as a fluid bearing. Oil pressure is higher when the engine is cold due to the increased viscosity of the oil, and also increases with engine speed until the relief valve in the oil pump opens to divert excess flow. Oil pressure is lowest under hot idling conditions, and the minimum pressure allowed by the manufacturer's tolerances is usually given at this point. Excessive oil pressure may indicate a blocked filter, blocked oil gallery or the wrong grade of oil. Low oil pressure indicates worn bearings or a broken oil pump. Some vehicle engines have an oil pressure switch that switches a warning light on at low oil pressure. Some vehicles have an oil pressure gauge in the dashboard or instrument cluster. Oil pressure is created by a fluid flow restriction in the outlet line of the pump, not by the pump itself. Examples of such restrictions include big end and main bearings, as well as camshaft and rocker gear if fitted. 油压是在大多数内燃机的寿命的重要因素。使用强制润滑系统（由Frederick兰彻斯特发明的），油被一个正排量抽出，被迫通过回油孔（通道）进入轴承，如主轴承，大的端部和凸轮轴轴承或平衡轴轴承。其它组分如凸轮凸角和汽缸壁由油喷射润滑。足够的油压保证的旋转轴（轴颈）金属与轴瓦不会接触，因此磨损仅限于初始启动和关闭。油压力结合轴的旋转，同时液压集中在其外壳的并冷却轴承。这种轴承被称为一个流体轴承。当发动机因为油的黏度而增加时，油压力会升高，同时发动机的转速也会增加，直到安全阀打开油泵转移过剩的流动。油压低于热怠速条件和制造商所允许的最小压力，通常在此点给出。过多的油压力可能表明过滤器堵塞、堵塞油道或错级油。低油压指示轴承的磨损或油泵的损坏。所有发动机有一个油压开关，开关在低油压的。一些车辆的仪表板或仪表盘上的拥有油用于显示油压。
prov:wasDerivedFrom	wikipedia-en:Oil_pressure?oldid=868423953&ns=0
page length (characters) of wiki page	2243(xsd:integer)
is foaf:primaryTopic of	wikipedia-en:Oil_pressure
is Link from a Wikipage to another Wikipage of	2014 British Grand Prix 2014 Singapore Grand Prix Saab Information Display Boeing 757 Chevrolet Corvette (C3) Chevrolet straight-6 engine BSA B25 1960 Gwyn Staley 160 1961 Rebel 300 1962 Southern 500 1983 Like Cola 500 1984 Winston 500 1995 British Grand Prix 2000 Brazilian Grand Prix 2001 Belgian Grand Prix 2001 Honda Indy 300 Shoo Shoo Shoo Baby History of Chrysler Porsche 3512 2002 Delphi Indy 300 2004 24 Hours of Le Mans 2010 Chinese Grand Prix Mikoyan-Gurevich MiG-3 Avanti (car) Ford flathead V8 engine Fort Worth Alliance Airport Constant-speed propeller Project High Wire Turbine engine failure Car controls Viscosity Volkswagen D24 engine Pontiac GTO Drifting (motorsport) Pressure switch Oil pressure (internal combustion engine)
is Wikipage redirect of	Oil pressure (internal combustion engine)

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