Patent ID: 7198037

Claim:
An exhaust gas cooler comprising: an exhaust gas inlet; an exhaust gas outlet; at least one coolant channel arranged between the exhaust gas inlet and exhaust gas outlet; a coolant inlet and a coolant outlet in fluid communication with the coolant channel; at least one exhaust gas passage adjacent to the at least one coolant channel and in fluid communication with the exhaust gas inlet and exhaust gas outlet; a bypass passage; and, a gas direction mechanism moveable to at least three positions, each position adapted to direct a different proportion of the exhaust gas between the at least one exhaust gas passage and the bypass passage. the gas direction mechanism comprising a sleeve with an inlet and at least one outlet, wherein the sleeve being axially displaceable such that the at least one outlet is alignable: (i) substantially exclusively with the at least one exhaust gas passage; (ii) substantially exclusively with the bypass passage; or, (iii) partially aligned with the exhaust gas passage and partially aligned with the bypass passage.