Title:
ENGINE, AND CONTROL DEVICE FOR ENGINE
Document Type and Number:
Japanese Patent JP2019199823
Kind Code:
A
Abstract:
To inhibit, in an engine equipped with a plurality of superchargers, when exhaust gas for driving the turbines of the respective superchargers flows in an exhaust passage by different routes and merges, exhaust temperature on an exhaust downstream side of the merging part to become excessively high.SOLUTION: In an engine 1 having an exhaust passage for flowing of exhaust gas, and superchargers 30, 40, the exhaust passage includes, from an exhaust upstream side towards an exhaust downstream side: a first exhaust path (an exhaust pipe 51); a branch part P1; a second exhaust path (exhaust pipes 52a, 52b) and a third path (exhaust pipes 53a, 53b), which are branched from the first exhaust path at the branch part P1; and a joining part P2 where the second exhaust path and the third exhaust path join with each other. A turbine 32 constituting the supercharger 30 is provided in the second exhaust path, and a turbine 42 constituting the supercharger 40 is provided in the third exhaust path. The heat radiation of the third exhaust path is higher than the heat radiation of the second exhaust path.SELECTED DRAWING: Figure 1
Inventors:
TAKAGI AKIHIRO
Application Number:
JP2018093552A
Publication Date:
November 21, 2019
Filing Date:
May 15, 2018
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
F01N3/20; F01N3/08; F01N3/24; F01N3/28; F02B37/00; F02B37/007; F02D23/00
Attorney, Agent or Firm:
Fukami patent office