Suzuki Motor Corporation

Michinori Shimizu

Kazuhiko Morimoto

Yoshiaki Omata

Hiroshi Ohsawa

Daisaku Takahashi

The purpose of this invention is to prevent magnetic flux and electric wave noise leaking from electric motor from affecting the magnetism prevention components of other materials, to reduce the number of assemblies and number to be assembled, and to fulfill reduction of cost. For this purpose, the present invention provides a magnetism prevention structure of a motor assist apparatus for a vehicle, having an electric motor which is directly connected with an engine and consists of a motor rotor and a motor stator, comprising: a rotational position sensor which consists of a sensor rotor and a sensor stator, wherein said motor stator and said sensor stator are each attached to a motor case installed in a cylinder block of the engine. The motor rotor and the sensor rotor are each attached to a rotor installation member that is installed in a crank shaft; and the motor assist apparatus which integrates a magnetism prevention part to prevent magnetic flux and/or electric wave noise leaking from the electric motor from leaking through the motor case between motor rotor and motor stator of electric motor and a signal line connected to the sensor stator of said rotational position sensor and/or the sensor stator.

Magnetism prevention structure of a motor assist apparatus for a vehicle

Objects of this invention are to reduce costs, improve ease of operation, improve the water-resistance within the terminal case, and improve reliability. To these ends, in this invention the motor stator of an electric motor is mounted in a motor case which is mounted on the cylinder block of an engine; the motor rotor of the electric motor is mounted on a rotor mounting member which is mounted on the engine crankshaft; on the outer periphery of the case periphery wall of the motor case is formed a terminal box, with vertical walls standing integrally, and having an aperture portion directed in the outward radial direction; in the case periphery wall, enclosed by the vertical walls, is formed a motor-side through hole, directed in the outward radial direction; on the motor-side coil wire is mounted a motor-side connection terminal; this motor-side connection terminal is embedded and retained in the motor-side through hole by molding, and by means of this molding the motor-side through hole is sealed.

Wiring connection device

A hybrid vehicle includes a control apparatus having an engine controller and a motor controller. A first battery and a second battery which has higher voltage than the first battery are provided. An electric power generator which is driven by the engine is provided for charging the first battery. The second battery and the electric motor are connected through the motor controller, and the first battery or the electric power generator is connected to the motor controller and the engine controller. In addition, the first battery or the electric power generator is connected to the engine controller for maintaining a power supply for operation maintenance of the engine controller. The second battery and the electric motor are connected through the motor controller. The second battery or the electric motor is connected to the motor controller through a DC/DC converter. As a result, even if the high voltage line including the electric motor in the control apparatus for the hybrid vehicle has failed, this system can drive the vehicle.

Control apparatus for hybrid vehicle

A power transmission structure of a motor assist apparatus for a vehicle, wherein a ring gear need not have a flywheel function, such that a width of a flywheel can be reduced and a length of a motor housing can be shortened. In a vehicle with front wheel drive, because the starter motor does not interfere with a drive shaft, the degree of freedom in layout of the drive shaft, starter motor and the like increases. A ring gear installation member mounting a ring gear on an outer circumferential location thereof is provided between a rotor installation member (which mounts thereon a motor rotor of the engine) and a crank shaft of the engine.

Power transmission structure of a motor assist apparatus for a vehicle

In a propulsion unit of a vehicle, a rotational displacement detection mechanism is covered or shielded from magnetic flux and radio wave noise which leak from the dynamotor to reduce noise occurring in a signal of the rotational displacement detection mechanism. A magnetic-proof member is disposed between the dynamotor and the rotational displacement detection mechanism in order to shield the mechanism from magnetic flux and/or the radio wave noise.

Propulsion unit of vehicle

A composite power unit designed to permit the inertial moment of a flywheel to be positioned adjacent to one end of a crankshaft, thereby allowing the crankshaft to experience a reduced level of bending stress and torsional vibration. The composite power unit includes a flywheel mounted on a crankshaft at one end thereof, which flywheel is formed by a disk-like first flywheel and a second flywheel in which the former flywheel is positioned toward an engine while the latter flywheel is disposed toward a transmission. A rotational sensor and a dynamotor are both disposed between the first and second flywheels and are arranged in sequence from the side of the engine, a flange-like clutch-receiving surface is disposed on the second flywheel at an end thereof toward the transmission, and a clutch is attached to the clutch-receiving surface and covered by a transmission case of the transmission.

Growing community of inventors

Hamamatsu, Japan

Michinori Shimizu