Title:
COMPRESSION-BRAKING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/143373
Kind Code:
A3
Abstract:
A method is disclosed for controlling compression-braking performance of an engine (10) having a piston (16) in a combustion cylinder (14). The method may include providing a valve (38) in fluid communication with the combustion cylinder and at least one valve actuator (44) operable to control the valve to perform compression-braking by opening the valve, which may include opening the valve to a first peak-valve -opening (62) during a compression stroke of the piston and opening the valve to a second peak-valve-opening (64) before a second half of an expansion stroke of the piston. The method may also include determining a target value for a stress in the at least one valve actuator. Additionally, the method may include designing the magnitude and timing of the first peak- valve-opening as a function of the target for the stress in the at least one valve actuator.
Inventors:
AFJEH HOMA (US)
LANGEWISCH EDWIN H (US)
LANGEWISCH EDWIN H (US)
Application Number:
PCT/US2011/036158
Publication Date:
February 23, 2012
Filing Date:
May 12, 2011
Export Citation:
Assignee:
CATERPILLAR INC (US)
AFJEH HOMA (US)
LANGEWISCH EDWIN H (US)
AFJEH HOMA (US)
LANGEWISCH EDWIN H (US)
International Classes:
F02D13/04; F01L13/06
Domestic Patent References:
| WO1996010125A1 | 1996-04-04 |
Foreign References:
| US20050188966A1 | 2005-09-01 | |||
| US20040187842A1 | 2004-09-30 | |||
| EP1221542A2 | 2002-07-10 |
Attorney, Agent or Firm:
MYERS, Carl, E. et al. (Peoria, IL, US)
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