EGR cooler bypass valve, EGR cooler system and EGR system

摘要

An EGR cooler bypass valve for switching EGR gas flow to an EGR cooler (2) comprises: a valve housing (3) having: an inlet port (11) through which the EGR gas flows into the valve housing (3); An outlet port (12) through which the EGR gas flows out of the valve housing (3); an inlet chamber (13) into which the EGR gas flows, the inlet chamber (13) being configured to communicate with the inlet port (11 ); an outlet port (14) through which the EGR gas flows from the valve housing (3) to the EGR cooler (2); an inlet port (15) through which the EGR gas from the EGR cooler (2) flows to the valve housing (3); an outlet channel (16) which is in communication with the outlet port (14); an outlet channel (17) for the flow of the EGR gas, the outlet channel (17) between the inlet port (15) and the outlet port (12) is placed; anda bypass channel (18) placed between the inlet chamber (13) and the outlet channel (17); a valve element (5) placed in the valve housing (3) and between a state of opening a communication between the inlet chamber (13) ) and the outlet channel (16) and a state for opening a connection between the inlet chamber (13) and the outlet channel (17) through the bypass channel (18) changes; a valve shaft (4) which is rotatably provided in the valve housing (3) and supporting the valve element (5); a first partition (21) separating the outlet channel (16) and the outlet channel (17), the valve shaft (4) being placed on an extension of the first partition (21); a first end side (31) formed in the valve housing (3); anda second end side (32) formed at a position opposite and parallel to the first end side (31) in the valve housing (3), wherein the inlet port (11) and the outlet port (12) are arranged in the first end side (31) and the outlet connection (14) and the inlet connection (15) are arranged in the second end side (32), characterized by a second partition (22) which separates the inlet chamber (13) and the outlet channel (17), wherein the bypass channel (18 ) is formed by the second partition (22), and wherein the second partition (22) is placed substantially parallel to the first partition (21), and the valve element (5) has an L-shaped cross-section including a short side passing through the Valve shaft (4) is supported.