Exhaust system for multi-cylinder engine

Japanese Patent JP6354693

B2

PROBLEM TO BE SOLVED: To stably hold a state that a movable part is displaced to an upstream side by an actuator while reducing a size of the actuator which displaces the movable part of a dynamic pressure exhaust system to upstream/downstream directions.SOLUTION: An exhaust device of a multicylinder engine comprises: a nozzle part in which a plurality of nozzle inside passages extending from a plurality of independent exhaust passages are formed; a movable part which has a flow-in part to which gases from the nozzle inside passages flow, and a coagulant part in which the gases which have passed the flow-in part are coagulated, and changes a flow rate area of the flow-in part by being displaced to upstream]/downstream directions at a downstream side of the nozzle part; and a moving mechanism which displaces the movable part to the upstream/downstream directions. The moving mechanism comprises: an operation part which can oscillate along the upstream/downstream directions; an operated part which displaces the movable part to the upstream/downstream directions accompanied by the oscillation of the operation part; an eccentric cam; an actuator for imparting a rotation force to the eccentric cam; a displacement part which is displaced to the upstream/downstream directions accompanied by the rotation of the eccentric cam; a pivot part arranged in a center of oscillation; a pivot support part for supporting the pivot part; and a connecting part which connects the displacement part, the pivot part and the operation part to one another.SELECTED DRAWING: Figure 7

Tatsuya Koga
Shiro Kato
Naoyuki Yamagata

JP2015147097A

July 11, 2018

July 24, 2015

Click for automatic bibliography generation  

Mazda Corporation Inc

F01N13/08; F02B27/06

JP2013104354A
JP2013053574A
JP2001140640A

Etsushi Kotani
Masataka Otani
Tsutomu Fukunari

Previous Patent: A brake operating unit of vehicles

Next Patent: JPS6354694