Nissan Motor Company Limited

Gates Unitta Asia Company

Kentaro Kawahara

Toru Fukami

Yoshifumi Iribe

Keisuke Azuma

An internal combustion engine control method controls an internal combustion engine equipped with an exhaust gas temperature variation factor unit that varies the temperature of an exhaust gas of the internal combustion engine, an exhaust heat recovery device disposed in an exhaust passage downstream of the exhaust gas temperature variation factor unit and that recovers the heat from the exhaust gas into a refrigerant that cools the internal combustion engine, and a refrigerant flow rate adjustment unit that adjusts a flow rate of the refrigerant that passes through the exhaust heat recovery device. The internal combustion engine control method estimates a boiling margin, which is a parameter related to a thermal margin when the refrigerant boils in the exhaust heat recovery device, and determines whether to execute a boiling avoidance process in accordance with the boiling margin.

Internal combustion engine control method and internal combustion engine control device

An arm () supporting a tension pulley () around which an endless torque transmitting member (B) is looped is supported by a fixed member (E) via a base member (). A torsion coil spring () is interposed between the base member () and the arm (). The base member () is brought into pressure-contact with the fixed member (E) by a tightening force of a bolt (). A pivot shaft () is fitted onto the outer circumference of the bolt () so as not to cause a tip to contact the fixed member (E). By transmitting an axial force generated by tightening the bolt () to the base member () via a flange (A) formed on the outer circumference of the pivot shaft (), the distribution of a contact pressure between the fixed member (E) and the base member () is optimized.

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Kawasaki, Japan

Kentaro Kawahara