AIR-HYBRID ENGINE WITH SPLITTED CYCLE AND METHOD OF ITS OPERATION Russian patent published in 2014 - IPC F02B33/22 F02B41/00 

FIELD: engines and pumps.

SUBSTANCE: air-hybrid engine 10 with splitted cycle comprises crankshaft 16, compression piston 20 fitted in compression cylinder 12 and coupled with crankshaft 16 to reciprocate during intake and compression strokes, and expansion piston 30 arranged in expansion cylinder 14 and coupled with crankshaft 16 to reciprocate during expansion and discharge strokes at one revolution of crankshaft. Adapter channel 22 communicates compression and expansion cylinders 12 and 14 and comprises compression adapter valve 24 and expansion adapter valve 26 that make a pressure chamber. Air tank 40 is communicated with adapter channel 22 to act selectively so that compressed air from compression cylinder 12 is accumulated and compressed air is fed into expansion cylinder 14. Air tank valve 42 adjusts selectively the airflow in and out from air tank 40. Engine is operated in air expander and ignition modes (in AFF mode). In said mode, said engine has residual expansion stage at closure of expansion adapter valve 26 of 15.7:1 or larger. Invention describes operation of air-hybrid engine with splitted cycle.

EFFECT: decreased fuel consumption and emissions.

16 cl, 8 dwg