Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 23, 2018
Patent Application Number
15320586
Date Filed
June 23, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
A vehicular drive system includes an engine having a first oil, a transmission having a second oil, and a heat exchanger 4 that exchanges heat between the first oil and the second oil. The magnitude of the amount of reduction of loss torque in the transmission per unit amount of reduction of the kinetic viscosity of the second oil is larger than the magnitude of the amount of increase of loss torque in the engine per unit amount increase of the kinetic viscosity of the first oil.
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