Title:
ディーゼルエンジン用潤滑油組成物
Document Type and Number:
Japanese Patent JP4515797
Kind Code:
B2
Abstract:
The invention provides lubricant compositions for diesel engines having a regenerative DPF, which prolong life of the DPF by inhibiting accumulation of components depositable on DPF inner walls, diesel engine systems having a regenerative DPF with prolonged life, and a method for inhibiting accumulation of components depositing on the DPF in the system. The present composition is for diesel engines having a regenerative DPF and running on diesel fuel with < 10 mass ppm sulfur, contains a base oil and additives including (A) metal detergent, (B) ashless dispersant, and (C) phosphorus-based anti-wear agent, and satisfies the conditions of a sulfated ash content of 0.4-2 mass%, an atomic ratio of metal from component (A) to the total phosphorus of 0.2-3, an atomic ratio of the total boron to metal from component (A) of 0.2-2, and an atomic ratio of the total sulfur to metal from component (A) of 0-4.
Inventors:
Isao Kurihara
Mineo Kagaya
Mineo Kagaya
Application Number:
JP2004081147A
Publication Date:
August 04, 2010
Filing Date:
March 19, 2004
Export Citation:
Assignee:
Shin Nippon Oil Co., Ltd.
Petroleum Industry Activation Center
Petroleum Industry Activation Center
International Classes:
C10M169/04; C10M133/16; C10M133/56; C10M137/06; C10M137/10; C10M139/00; C10M159/22; C10M163/00; F01M11/00; C10N10/04; C10N20/00; C10N30/00; C10N40/25
Domestic Patent References:
| JP2003165992A | ||||
| JP2004035652A | ||||
| JP2003277782A | ||||
| JP8253782A |
Other References:
トライボロジー会議予稿集,社団法人日本トライボロジー学会,2003年10月20日,437頁
Attorney, Agent or Firm:
Hajime Sakai
Masahiro Kurai
Masahiro Kurai