Mazda Motor Corporation

Tsukasa Hoshino

Ryo Yamamoto

Kazumi Okamura

Ken Yoshida

Kenji Sugasaki

Kouichi Shimizu

Masanobu Koutoku

Yukiya Tanaka

Makoto Shinhama

Hirofumi Shinohara

Toshimichi Nishikawa

Hidesaku Ebesu

Ryotaro Nishida

Mitsunori Wasada

Shuhei Tsujita

Taketoshi Yamauchi

Tatsuya Koga

Jiro Kato

Haruna Yanagida

Eiji Takano

Mitsutaka Yamaya

Yoshihiro Hamazume

Hisayuki Yamane

Hiroki Shimoji

Masafumi Nakano

Koji Endo

A determination is made whether or not the condition that the amount V of condensed water remaining in an intake passage has exceeded a predetermined upper limit has been met, based on an input parameter associated with the amount V. If, during an engine operation in an unsupercharged mode, a determination is made that the condition has been met, a condensed water discharging operation of a supercharger is performed such that the condensed water remaining is discharged to a cylinder of the engine through operation of the supercharger.

Engine control device and engine control method

The present disclosure aims to improve circulation of intake air and distribution of bypass intake air to cylinders, while reducing an increase in the overall height of an engine. A supercharger extends along a cylinder bank at a side of a surge tank extending along the cylinder bank. A bypass pipe branching off from an upstream intake pipe configured to introduce the intake air into the supercharger extends along the cylinder bank above the supercharger. A downstream side intake pipe configured to guide the intake air from the supercharger to the surge tank extends downward from the supercharger. The downstream intake pipe is, in a U-shape as viewed along the cylinder bank, connected to the surge tank.

Engine with supercharger arrangement

A heat insulating structure of an internal combustion engine (engine) includes a cylinder-head-side heat insulating cover () and a cylinder-block-side heat insulating cover (). Each of the first side walls () of the cylinder-head-side heat insulating cover () is disposed outwardly of, and is spaced apart from, a corresponding one of the second side walls () of the cylinder-block-side heat insulating cover () in the width direction of the vehicle. The lower edge of each of the first side walls () is positioned below the upper edge of the corresponding one of the second side walls () to overlap with the corresponding one of the second side walls () when viewed from the side of the vehicle.

Heat insulating structure for internal combustion engine

A heat insulating cover (cylinder-head-side heat insulating cover ()) includes a top wall () and first side walls (). The top wall () covers a top surface of an engine () that is a surface of an upper portion of the engine (). The first side walls () cover respective upper portions of both side surfaces of the engine () in a vehicle width direction. A portion of the heat insulating cover closer to the rear of the vehicle is provided with a hinge mechanism () vertically rotatably supporting the upper portion of the heat insulating cover including the top wall (). The upper portion of the heat insulating cover can be rotated, with the hinge mechanism () as a fulcrum, between a closed position where the engine () is shielded and an open position where the engine () is visible.

Attachment structure for heat insulating cover

An exhaust purification device of a multi-cylinder engine which improves exhaust gas purification performance by substantially uniforming a flow rate of exhaust gas throughout a treatment carrier such as a catalyst and improving dispersibility of the exhaust gas from the multi-cylinder engine to the catalyst and other components in the exhaust purification device wherein two collecting pipes are arranged at substantially symmetric positions across a partition plate part, which has a linear cross sectional shape, and is arranged centrally between the pipes which are each formed into D-shaped cross sectional shapes and comprise a first straight line part, a pair of second straight line parts connected with respective ends of a first straight line part and arranged to be substantially parallel with each other, and a circular arc part that connects ends of a pair of second straight line parts on opposite sides of the first straight line part.

Exhaust device of multi-cylinder engine

Growing community of inventors

Hiroshima, Japan

Tsukasa Hoshino