CO2 SEPARATION DEVICE OF INTERNAL COMBUSTION ENGINE

To provide a CO2 separation device of an internal combustion engine which can reduce the work of a compressor by suppressing a rise of a temperature at the compression of CO2 by a compressor, and can prevent a freeze of produced condensed water.SOLUTION: A CO2 separation device of an internal combustion engine comprises: a first exhaust passage; a CO2 adsorption material for adsorbing and desorbing CO2; control means performing CO2 adsorption control and CO2 desorption control; a second exhaust passage communicating with the CO2 adsorption material, and released to the atmosphere at a downstream-side end; a branched passage branched from the second exhaust passage; compression means arranged at the branched passage, and compressing CO2; a storage tank storing the compressed CO2; switching means switching a flow of an exhaust gas; switching control means switching the flow of the exhaust gas at the CO2 adsorption control to the second exhaust passage side, and switching the flow to the branched passage side at the CO2 adsorption control; and a water jacket into which cooling water for cooling the internal combustion engine is introduced, and which cools the compression means and the storage tank.SELECTED DRAWING: Figure 1 【課題】圧縮機によるＣＯ２の圧縮の際の温度上昇を抑制することで圧縮機の仕事を減少させるとともに、発生した凝縮水の凍結を防止できる内燃機関のＣＯ２分離装置を提供する。【解決手段】本発明の内燃機関のＣＯ２分離装置は、第１の排気通路と、ＣＯ２の吸着／脱離を行うＣＯ２吸着材と、ＣＯ２吸着制御とＣＯ２脱離制御を実行する制御手段と、ＣＯ２吸着材に連通し、下流側端で大気開放される第２の排気通路と、第２の排気通路から分岐する分岐通路と、分岐通路に設けられ、ＣＯ２を圧縮する圧縮手段と、圧縮されたＣＯ２を貯蔵する貯蔵タンクと、排気ガスの流れを切り替える切替手段と、ＣＯ２吸着制御時に排気ガスの流れを第２の排気通路側に切り替え、ＣＯ２脱離制御時に分岐通路側に切り替える切替制御手段と、内燃機関を冷却する冷却水が導入され圧縮手段及び貯蔵タンクを冷却するウォータージャケットと、を備える。【選択図】図１