The purpose of this research is to determine the anti-wear capability of new advanced low viscosity engine oil to meet the Sequence IVB requirement of ILSAC GF-6 specification, which envisages that the first certifica...The purpose of this research is to determine the anti-wear capability of new advanced low viscosity engine oil to meet the Sequence IVB requirement of ILSAC GF-6 specification, which envisages that the first certification will be realized in 2020. The anti-wear performance of the aged candidate GF-6 engine oils was evaluated using the laboratory bench test rigs such as the Falex Pin & Vee Block test machine and the high frequency reciprocating rig (HFRR). The worn surfaces were analyzed by X-ray photoelectron spectroscopy (XPS). The remarkable anti-wear performance of the developed GF-6 engine oil was also confirmed in the Sequence IVB test. The results indicate that by appropriately selecting and balancing the calcium detergent additives the wear loss of cam and tappet determined in the Sequence IVB test at low temperature could be significantly reduced. The time for occurrence of the intersection of the base and acid values corresponds well with the increase of wear of cam tappet of the IVB engine test.展开更多
This paper primarily focuses on the development of the International Lubricant Standardization & Approval Committee (ILSAC) GF-5 passenger car engine oil category in North America and Japan including key technical...This paper primarily focuses on the development of the International Lubricant Standardization & Approval Committee (ILSAC) GF-5 passenger car engine oil category in North America and Japan including key technical performance requirements. New ILSAC GF-5 is scheduled to be introduced during the 3rd quarter of 2010 and will supersede ILSAC GF-4 and previous categories. It will also be backward compatible and will provide improved performance relative to GF-4 in many respects. At the same time, when GF-5 is introduced, it is anticipated that API SN will also be introduced as a new performance category to supersede the current category, API SM.展开更多
基金supported by the Research Project of China Petrochemical Corporation (SINOPEC 114005)
文摘The purpose of this research is to determine the anti-wear capability of new advanced low viscosity engine oil to meet the Sequence IVB requirement of ILSAC GF-6 specification, which envisages that the first certification will be realized in 2020. The anti-wear performance of the aged candidate GF-6 engine oils was evaluated using the laboratory bench test rigs such as the Falex Pin & Vee Block test machine and the high frequency reciprocating rig (HFRR). The worn surfaces were analyzed by X-ray photoelectron spectroscopy (XPS). The remarkable anti-wear performance of the developed GF-6 engine oil was also confirmed in the Sequence IVB test. The results indicate that by appropriately selecting and balancing the calcium detergent additives the wear loss of cam and tappet determined in the Sequence IVB test at low temperature could be significantly reduced. The time for occurrence of the intersection of the base and acid values corresponds well with the increase of wear of cam tappet of the IVB engine test.
文摘This paper primarily focuses on the development of the International Lubricant Standardization & Approval Committee (ILSAC) GF-5 passenger car engine oil category in North America and Japan including key technical performance requirements. New ILSAC GF-5 is scheduled to be introduced during the 3rd quarter of 2010 and will supersede ILSAC GF-4 and previous categories. It will also be backward compatible and will provide improved performance relative to GF-4 in many respects. At the same time, when GF-5 is introduced, it is anticipated that API SN will also be introduced as a new performance category to supersede the current category, API SM.
