Dual cycle engine

Details Dual cycle engine Dual cycle engine

1992-07-20

1993-03-09

Okonsky, David A.

Internal-combustion engines

Convertible cycle

123 65A, 123315, F02B 3510

Patent

active

051918587

ABSTRACT:
The invention relates to new and useful improvements in dual-cycle engine design and construction. The invention enhances the mechanical ability of such engines to automatically match the engine cycle with the load conditions while the system is in operation in a manner which significantly reduces the specific fuel consumption. Using the standard L-head engine configuration, the upper cylinder manifolding and the lower cylinder manifolding are combined as single flow channels reducing the number of components required to sequence flow to and from the engine. Combining the upper and lower cylinder manifold circuits standardizes the operating pressures in each system improving exhaust gas ejector efficiencies, facilitating engine control, and simplifying the application of pressure boosting in the air induction circuit. These improvements reduce the design complexity and simplify the automatic transition from 4-stroke to 2-stroke operation. Other benefits of the invention are the reduction of manufacturing costs, decreased engine weight and smaller system envelope.

REFERENCES:
patent: 2131616 (1938-09-01), Christenson
patent: 3038455 (1962-06-01), Dobrosavljeric
patent: 4108119 (1978-08-01), McWhorter
patent: 4125105 (1978-11-01), May
patent: 4248199 (1981-02-01), McWhorter
patent: 4312313 (1982-01-01), McWhorter
patent: 4660513 (1987-04-01), Figliuzzi
patent: 5113805 (1992-05-01), Kawamura
patent: 5134849 (1992-08-01), McWhorter
patent: 5154141 (1992-10-01), McWhorter

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