Patent Number: 6,253,745

Title: Multiple stroke engine having fuel and vapor charges

Abstract: A six-stroke cycle engine burns an air-fuel charge for a first power stroke, the exhaust gases being directed to a heat regenerator located in a vapor heating chamber. A second power stroke is produced by injecting fluid directly into the heat regenerator, for generating a second power stroke with the expanded vapor, using the same engine reciprocating mechanism.

Inventors: Prater; David M. (Andover, MA)


International Classification: F01K 23/06 (20060101); F02B 75/02 (20060101); F02F 1/24 (20060101); F01K 027/00 ()

Expiration Date: 07/03/2018