Title:
エンジン油組成物
Document Type and Number:
Japanese Patent JP4614049
Kind Code:
B2
Abstract:
An engine oil composition that has lower viscosity then the lowest viscosity grade specified by the current standard (SAE (Society of Automotive Engineers) viscosity classification) and achieves excellent abrasion resistance under conditions of high temperature and high shear rate without an increase in the amount of anti-abrasion agent, said engine oil composition characterized by the following facts: the engine oil composition contains 0.02-0.12 mass% of zinc dithiophosphate, measured in the phosphorous amount based on the total weight of the composition, in a base oil compromised of a mineral oil and/or a synthetic oil; (1) the high-temperature high-shear viscosity at 150 DEG C and at a shear rate of 1 x 10<6> s<-1> is less than 2.6 mPa•s; (2) the engine oil composition satisfies the following equation: kinematic viscosity at 100 DEG C (mm<2>/s) DIVIDED high - temperature high - shear viscosity at 100 DEG C and at a shear rate of 1 x 10<6> s<-1> (mPa • s) ORTHOGONAL ≤ 1.3
More Like This:
| JPH08209180 | REFRIGERATOR OIL COMPOSITION |
Inventors:
Marumo Miyoshi
Yokoyama Yasuharu
Hiroyuki Iwasaki
Yokoyama Yasuharu
Hiroyuki Iwasaki
Application Number:
JP2004108573A
Publication Date:
January 19, 2011
Filing Date:
March 31, 2004
Export Citation:
Assignee:
TonenGeneral Sekiyu KK
International Classes:
C10M169/04; C10M101/02; C10M137/10; C10M161/00; C10M107/02; C10N10/04; C10N20/00; C10N20/02; C10N30/02; C10N30/06; C10N30/08; C10N40/25
Domestic Patent References:
| JP10114895A | ||||
| JP11315297A | ||||
| JP2002249795A | ||||
| JP11080771A | ||||
| JP8209178A |
Attorney, Agent or Firm:
Kohei Kubota