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Patent Searching and Data


Title:
MULTI-MODE HIGH EFFICIENCY INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2011/112735
Kind Code:
A4
Abstract:
An internal combustion engine can be operated in an efficiency mode to provide a first power output range between zero and a transition power output level and in a power mode to provide a second power output range between the transition power output level and a maximum power output level. A first ignition timing and a first air/fuel ratio of the mixture can be used in the efficiency mode to avoid premature auto-ignition of a mixture of inlet air and a fuel according to an octane rating of the fuel and a compression ratio exceeding approximately 13:1. A second ignition timing and a second air/fuel ratio of the mixture can be used in the power mode to avoid premature auto-ignition of the mixture according to the octane rating of the fuel and the compression ratio exceeding approximately 13: 1. To further enable knock free operation of such an engine, turbulence can be imparted to the mixture to promote a faster burn duration and high temperatures that may lead to premature auto-ignition of the mixture can be avoided.

Inventors:
CLEEVES JAMES M (US)
MANOV NICHOLAS (US)
WILLCOX MICHAEL A (US)
JACKSON SIMON DAVID (US)
Application Number:
PCT/US2011/027775
Publication Date:
October 27, 2011
Filing Date:
March 09, 2011
Export Citation:
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Assignee:
PINNACLE ENGINES INC (US)
CLEEVES JAMES M (US)
MANOV NICHOLAS (US)
WILLCOX MICHAEL A (US)
JACKSON SIMON DAVID (US)
International Classes:
F02D41/30; F02D15/00; F02D35/02
Attorney, Agent or Firm:
VAN LOY, Michael, D. et al. (P.C.One Financial Cente, Boston MA, US)
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