Toyota Jidosha Kabushiki Kaisha

Kazuhiro Mori

Akira Yamashita

Koichiro Nakatani

Soya Takagi

Hisashi Ohki

Tatsuhiro Terada

Takashi Asano

Hiroaki Muramatsu

A case that houses a chain includes a first cover member fixed to a cylinder block and a cylinder head, and a second cover member arranged on the opposite side of the cylinder block and the cylinder head from the first cover member. In an intermediate part, which is a part of a confronting wall of the first cover member between the first flange and the second flange, a cover-side rib is provided, having a height so that a distal end of the cover-side rib is not in contact with the cylinder block.

Internal combustion engine

A flow rate controller of an internal combustion engine includes a flow rate change section configured by including an EGR valve, a bypass valve, and a diesel throttle, as the flow rate change section capable of changing at least one of a flow rate of exhaust gas that is recirculated to an intake system from an exhaust system of an internal combustion engine via an EGR passage and a flow rate of fresh air that flows into the internal combustion engine. In addition, an ECU is included to realize: an arrival position determining section for determining an arrival position of condensed water in the EGR passage that is moved by the EGR at least either at the time of acceleration or at the time of deceleration of the internal combustion engine; and a control section for controlling the flow rate change section on the basis of the arrival position determined by the arrival position determining section.

Flow rate controller of internal combustion engine

A buildup valve comprising a valve body of a quench-hardenable, heat resistant steel having a valve face and a buildup layer formed on the valve face from a cobalt or nickel base superalloy having higher wear and heat resistances than the heat resistant steel is useful in internal combustion engines. A hardened layer is formed in the valve face portion adjacent the buildup layer and has a maximum thickness between 0.05 mm and 2.0 mm. The buildup layer thus has a reduced thickness between 0.1 mm and 0.5 mm. The buildup valve is produced by supplying and depositing a powder of the alloy on the valve face, and applying a scanning high flux energy laser or plasma beam to the powder deposit to cause the powder to quickly melt and then quickly solidify thereby forming the buildup layer and at the same time, to cause a surface layer of the valve body underlying the powder deposit to quickly heat and then quickly cool thereby forming the hardened layer.

Method of producing a buildup valve for use in internal combustion

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Toyota, Japan

Kazuhiro Mori