Patent ID: 9188037
Filing Date: 2015-11-17
Classification: F01N,F02M,F23J,F28C,F28D,F28F,F28G,Y02T

Abstract:
1. An exhaust gas cooler for cooling exhaust gas of an internal combustion engine, the exhaust gas cooler comprising: a cooler housing having an exhaust gas inlet and an exhaust gas outlet forming an exhaust gas passage extending between the exhaust gas inlet and the exhaust gas outlet; a cooling unit installed in the exhaust gas passage with a cooling surface for cooling the exhaust gas, the cooling surface comprising an initial cooling region in which exhaust gas is cooled to a temperature above a dew point of an evaporated liquid within the exhaust gas, downstream thereof a condensation starting region where the exhaust gas is cooled to a temperature within the range of a dew point of an evaporated liquid within the exhaust gas; and a liquid injection system comprising at least one liquid spray outlet installed in the exhaust gas passage upstream of the initial cooling region, and configured such that during operation of the internal combustion engine at least some liquid sprayed from the at least one liquid spray outlet is transported to the initial cooling region; wherein the liquid injection system comprises at least one other liquid spray outlet positioned along the condensation starting region.