Yanmar Co., Ltd.

Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Yanmar Power Technology Co., Inc.

Gou Asai

Takeshi Takahashi

Takashi Miyamoto

Terumitsu Takahata

Yukihiro Shinohara

Hidenori Nomura

Tomoyuki Tsuda

Hitoshi Adachi

Kouji Shimizu

Takao Kawabe

Toshiro Itatsu

Isao Takagawa

Keiichiro Yuzaki

Takahiko Kimura

Tomohiro Ootani

Keiji Ooshima

Provided is an engine that suppresses the occurrence of knocking or an accidental fire, which makes it possible to perform the operations of premixed compression self-ignition. Regarding the present invention, an engine includes a reforming cylinder, which is a fuel reforming device, and the reforming cylinder is connected to an intake pipe and an EGR pipe via a supply pipe and connected to the intake pipe via an exhaust pipe, and a primary fuel injection device is provided that injects fuel to the mixture of intake air and exhaust gas supplied to the reforming cylinder through the supply pipe.

Engine

A diesel engine in which a lubrication oil on the wall surface of the cylinder liner is prevented from being burned and diluted, and a smoke resulting from the local lack of air in the combustion chamber is also prevented from being generated. The diesel engine comprises a group injection hole nozzleand a piston. A stephaving a height gradually increased toward the radial outer circumference of the piston is formed over the entire circumference of the top surfaceof the piston. Furthermore, a tilted partis formed as the step surface of the step

Diesel engine

A fuel injection control device for a diesel engine controls the first fuel injection timing so as to reduce the amount of white smoke generated in large amounts immediately after starting an engine. The fuel injection control device for the diesel engine comprises a high-pressure pump, a common rail for accumulating a highly-pressured fuel, injectors for injecting the fuel into a combustion chamber and a control means. Due to the fuel injection control device for the diesel engine, the fuel injection is performed after the cranking, without injecting the fuel for a certain period of time after an engine starting switch is turned on so that the pressure in the common rail becomes a set value.

Fuel injection control device for diesel engine

A method for controlling an internal combustion engine, in which a traveling with reduced cylinders is controlled according to the idle-speed after the engine starting, so as to restrain the discharge of white smokes at the time lag for temperature equilibration soon after a cold starting. The method comprises a coolant water temperature detecting meansfor detecting the coolant water temperature in the internal combustion engine, a rotation speed detecting meansfor detecting the rotation speed of the internal combustion engineand a control means for controlling the operation of the internal combustion enginein accordance with the coolant water temperature and the rotation speed. When the internal combustion engine is evaluated that it is at the cold starting and the rotation speed reaches the predetermined rotation speed after the engine starting, a traveling with reduces cylinders is performed, which reduces the number of cylinders injecting fuels for a certain period of time.

Method of controlling internal combustion engine

A cetane number detection device in which an angular velocity detection device () for detecting the rotation angular velocity of the crankshaft () of an engine (), and which detects a variation in the value of the amplitude of the angular velocity detected by the angular velocity detection device () as a variation in cetane number.

Cetane number detection means and engine having the cetane number detection means

In a diesel engine equipped with an injectorhaving a plurality of intersections between an axis line of the injectorand the axes of injection holesbored in the injector, an air intake valveis controlled so that it is closed at timing before a BDC (at timing when a piston comes to a bottom dead center) by an ECU, which controls the timing of closing the air intake valvebased on operating conditions of the engine.

Method of controlling valve timing of diesel engine

Growing community of inventors

Osaka, Japan

Gou Asai