Title:
AIR INJECTION ENGINE
Document Type and Number:
WIPO Patent Application WO2004072448
Kind Code:
A3
Abstract:
The present internal combustion engine features separate compression and expansion cycles. The engine (10) includes a separate compressor device (13) pressurizing air by a ratio greater than 15 to 1, at least one two stroke combustion cylinder (70) and a compressed air conduit (50) for transferring compressed air from the compressor (13) into the combustion cylinder (70). An air injection valve (72A) injects the compressed air into the combustion cylinder during the second half portion of the return stroke of the combustion cylinder (70). The compressed air is mixed with fuel and combusted for expansion during the power stroke. In this engine (10), compression occurs only to a minor degree in the combustion cylinder (70). Accordingly, the compression ratio of the present engine (10) may be significantly higher or lower than the volumetric expansion ratio of the combustion cylinder thus resulting in corresponding increases in power density or thermodynamic efficiency respectively.
Inventors:
LUTTGEHARM CLINT A (US)
Application Number:
PCT/US2004/004547
Publication Date:
December 09, 2004
Filing Date:
February 12, 2004
Export Citation:
Assignee:
D J ENGINEERING INC (US)
LUTTGEHARM CLINT A (US)
LUTTGEHARM CLINT A (US)
International Classes:
F01L5/14; F01L7/00; F01L7/02; F02B1/00; F02B21/00; F02B23/10; F02B33/00; F02D13/02; F17D3/00; F02M23/00; F02B; (IPC1-7): F02B33/00; F01L7/00; F17D3/00
Foreign References:
| US4215659A | 1980-08-05 | |||
| US5711265A | 1998-01-27 | |||
| US4989641A | 1991-02-05 |
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