PROBLEM TO BE SOLVED: To provide a hydraulic circuit which can prevent suck-in of air into an oil pump and decrease oil quantity regardless of acceleration applied to oil reserved in an oil pan.SOLUTION: A hydraulic circuit 1 is mounted on a vehicle including an electric motor 10 as a driving source so as to lubricate the portions 11 to be lubricated and cool the electric motor 10. The hydraulic circuit 1 comprises: an oil pan 12; an oil passage 14 for lubrication which leads oil to the portions 11 to be lubricated; an oil passage 15 for cooling which leads oil to the electric motor 10; an oil pump 13 which inhales oil reserved in the oil pan 12 through an oil passage 17 for inhalation and rises the pressure of the inhaled oil to supply it into the oil passage 14 for lubrication and the oil passage 15 for cooling; a first oil passage 18 one end of which is connected with the oil passage 15 for cooling; and an on-off valve 19 arranged at the other end of the first oil passage 18 which is opened when deceleration of the vehicle is a predetermined deceleration or more.SELECTED DRAWING: Figure 1
【課題】オイルパンに貯留されるオイルに作用する加速度にかかわらずオイルポンプでの空気の吸い込みを防止しつつ、油量を低減することが可能な油圧回路を提供する。【解決手段】油圧回路1は、駆動源として電動モータ10を備える車両に搭載され、被潤滑部11の潤滑と電動モータ10の冷却を行う油圧回路である。油圧回路1は、オイルパン12と、被潤滑部11にオイルを導く潤滑用油路14と、電動モータ10にオイルを導く冷却用油路15と、オイルパン12に貯留されたオイルを吸入用油路17を介して吸入し、当該吸入したオイルを昇圧して潤滑用油路14及び冷却用油路15に供給するオイルポンプ13と、一端が冷却用油路15に接続される第1油路18と、第1油路18の他端に設けられ、車両の減速度が所定の減速度以上になると開弁する開閉弁19とを備える。【選択図】 図1
HYDRAULIC CIRCUIT
油圧回路
2018-05-10
Patent
Elektronische Ressource
Japanisch
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |