Abstract: Theoretical and experimental bases were investigated for internal combustion engine using liquid
oxygen to solidify carbon to verity the feasibility of the closed inlet and exhaust system of internal combustion engine.
A computing grid of gasoline-engine was established based on KIVA-3V code according to the actual shape of a
combustion chamber. The EGR (exhaust gas recirculation) rate effects were analyzed on the temperatures, the
pressures, the heat release rates and the concentrations of CO2 in a cylinder with an EGR rate of more than 8%. An
IP52FMI single-cylinder four-stroke gasoline-engine was improved without cylinder water injection system. And the
experiments of capture carbon were carried out in a self-made carbon dioxide trapping device. The results show that
dry ice of 33—345 g is obtained with an optimum EGR rate of 40% when liquid oxygen of 27—231 g inputs into the
device for 1—10 min. This verifies that using the carbon dioxide capture device can realize the oxygen gasification
and condensate the CO2 into dry ice.

Key words: internal combustion engines, CO2 emission reduction, oxygen-enriched combustion, carbonsequestration liquid oxygen, numerical simulation, KIVA-3V code, experiments