Mazda Motor Corporation

Taichi Masuoka

Taku Kuramashi

Daisuke Tanaka

Keishi Kitabatake

Yasunori Kanda

Yasunori Kanada

Yuji Torigoe

Shoko Suzuki

Kazuhiko Yamamoto

Yuki Date

Tatsuhiro Ishida

A damping structure of an inline six-cylinder engine is provided, which includes pistons reciprocatably fitted in the six cylinders, respectively, a crankshaft disposed below the pistons in a vertical direction of a vehicle and coupled to the pistons via connecting rods, respectively, the crankshaft being rotatable about an axis, a cylinder block having a plurality of crank journal parts disposed below the crankshaft in the vertical direction to rotatably support the crankshaft between adjacent cylinders in the crankshaft, a flywheel fixed to a rear end of the crankshaft in the longitudinal direction of the vehicle, and a dynamic damper attached to a lower part of the cylinder block, at at least one location between two adjacent cylinders among second through fourth cylinders, the six cylinders being disposed in an order of first through sixth cylinders from a front side to a rear side in the longitudinal direction.

Damping structure of inline six-cylinder engine

A control device for an on-board compression-ignition engine in which partial compression-ignition combustion including spark ignition (SI) combustion performed by combusting a portion of mixture gas inside a cylinder by spark ignition followed by compression ignition (CI) combustion performed by causing the rest of the mixture gas inside the cylinder to self-ignite is executed within at least a part of an operating range of the engine, is provided. The device includes a detector configured to detect a parameter related to noise caused by the combustion inside the cylinder, and a combustion controller configured to control the combustion inside the cylinder during the partial compression-ignition combustion based on a combustion noise index value identified by the detected parameter of the detector and a given reference value defined as an upper limit of the combustion noise index value, the reference value increasing as a vehicle speed increases.

Control device for compression-ignition engine

Provided is a powertrain for a vehicle in which an exhaust purifier is utilized as a dynamic damper. The powertrain includes an engine, and a transmission linked to the engine. The engine has an exhaust purification system containing a GPF device for purifying an exhaust gas. The exhaust purification system is disposed along a rear external surface of a cylinder head. The exhaust purification system is supported via a first support on the engine. A vertical side portion of the exhaust purification system is located downstream of the first support in a flow direction of an exhaust gas, extending in a direction away from the external surface.

Powertrain for vehicle

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Hiroshima, Japan

Taichi Masuoka