Nissan Motor Company Limited

Tsukasa Ichiba

Yoshihiro Terai

Makoto Ogata

Masayuki Ootani

Tomohiro Ito

Kenichi Goto

Azusa Kobayashi

Yoshihiro Kondo

Makoto Kozuka

Kensaku Endo

A power generation system includes an internal combustion engine, an electrical generator, and a power transmission mechanism. A method for controlling the system includes executing rotation speed control of driving the electrical generator by using electric power supplied from a battery, and matching a rotation speed of the electrical generator with a target rotation speed at the time of starting the power generation system. Output possible electric power of the battery and rotation speed of the electrical generator are acquired. A filtering process of reducing a component of a resonance frequency band of a spring-mass system including the engine, generator, and power transmission mechanism is executed on the rotation speed of the electrical generator. An upper limit torque of the electrical generator is calculated based on the filtered rotation speed and the output possible electric power. The rotation speed control is executed under a limitation of the upper limit torque.

Method and device for controlling starting of power generation system

A hybrid control method controls a hybrid vehicle. A control unit sets a rotational speed threshold value at which a continuous gear tooth striking sound occurring in a gear mechanism connecting an electric power generation motor to the internal combustion engine is not a problem in terms of vehicle quality. The control unit generates negative pressure while maintaining the engine rotational speed in the firing state where the engine rotational speed is equal to or greater than the rotational speed threshold value. Also, the control unit generates negative pressure after switching from the firing state to a motoring state where the internal combustion engine is rotated by the electric power generation motor and where the engine rotational speed is less than the rotational speed threshold value.

Hybrid vehicle control method and hybrid vehicle control device

A engine starting method is carried out to start an engine of a vehicle. The vehicle includes a first hub, a second hub, and a damper. The damper connects the first hub and the second hub in a power transmission path between the engine and a generator capable of power generation and powered travel. The engine starting method determines whether or not the engine needs to be started, begins to crank the engine via the generator when the engine needs to be started, performs a first ignition when torque fluctuation caused by torsion in the first hub and the second hub is in a range of being absorbable by the damper during the cranking, and suppresses engine torque generated by the first ignition below engine torque generated by second and subsequent ignitions.

Vehicle engine starting method, series hybrid vehicle, and vehicle engine starting device

Disclosed is a control method for an internal combustion engine () including a power generation motor () driven by a power of the internal combustion engine () and a damper () provided between the internal combustion engine () and the power generation motor () in a power transmission path, wherein a maximum value of a torque fluctuation generated in an event of a misfire occurring in a cylinder of the internal combustion engine () is larger than a value at which a displacement of a main damper () of the damper () is allowed to be suppressed to be smaller than a displacement at which abutting occurs on a first stopper () by a counter torque of the power generation motor (), and the control method includes limiting a torque (Te) of the internal combustion engine () within a range in which a displacement of the main damper () is allowed to be controlled to be smaller than a displacement at which abutting occurs on the first stopper () by a counter torque of the power generation motor ().

Growing community of inventors

Kanagawa, Japan

Tsukasa Ichiba