Abstract: A water jacket spacer is inserted into a water jacket. The water jacket spacer includes an expansion member, a plate-shaped holder to which the expansion member is fixed, and a leaf spring that abuts the inner wall of the water jacket. The leaf spring projects from a face on the holder on the side opposite of the expansion member. The holder curves to match the shape of the water jacket. The position of the water jacket spacer in the water jacket is maintained by the biasing force of the leaf spring.

Abstract: An exhaust gas purifying apparatus for an internal combustion engine comprises a casing which forms a part of an exhaust passage of the internal combustion engine and houses therein an occlusion-reduction type NOx catalyst and a reducing agent supply device which supplies a reducing agent to an interior of the casing on an upstream side of the NOx catalyst. The reducing agent supply device injects the reducing agent in a flat form in a direction intersecting a center line of the NOx catalyst from a nozzle hole disposed in the casing.

Abstract: An exhaust gas purifying apparatus for an internal combustion engine (1) comprises a casing (15) which forms apart of an exhaust passage (14) of the internal combustion engine and houses therein an occlusion-reduction type NOx catalyst (12, 13) and a reducing agent supply device (11) which supplies a reducing agent to an interior of the casing on an upstream side of the NOx catalyst. The reducing agent supply device injects the reducing agent in a flat form in a direction intersecting a center line (CL) of the NOx catalyst from a nozzle hole (11a) disposed in the casing.