Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Keiichi Ooiso

Takeshi Hoshinoya

Takabumi Suzuki

Koichi A Ono

Nobuhiro Kira

Hideki Morita

Yoshio Akiba

Shigeru Nakayama

Nobuyuki Hiramatsu

Kenji Honda

Akihiro Iwazaki

Rikiya Kunii

Jun Aoki

Katsuhiro Kitamura

Sei Shinohara

Toshio Hiyoshi

Satoshi Andou

Yoshihito Kurizuka

Tetsuya Otani

Yoichiro Yamamoto

A driving system for a vehicle includes a drive source, a driven portion, a wet multiple disc connection/disconnection unit provided on a power transmission path between the drive source and the driven portion, and a connection/disconnection unit controller configured to control a release and an application of the connection/disconnection unit, wherein the driving system further includes a time counter configured to obtain a continuous applied time that is an elapsed time from a start of a latest application of the connection/disconnection unit.

Driving system for vehicle

A driving system for a vehicle includes drive source, a driven portion, a unidirectional power transmitting unit provided on a power transmission path between the drive source and the driven portion, and having a first member, a second member, and an engaging element interposed between the first member and the second member, and an eccentricity acquiring unit adapted to acquire an eccentricity, the eccentricity being a magnitude of deviation between the rotational axis of the first member and the rotational axis of the second member.

A vehicle drive apparatus includes a motor, a case, a cover member, a sensor, and a separate member. The case includes a reservoir to store liquid fluid. The sensor is provided in a first communication hole of the cover member and is fixed to the cover member. A second communication hole constitutes a part of a fluid flow path extending from an inside of the case to an outside of the case. The fluid flow path has an intake port through which the liquid fluid is to be drawn. The fluid flow path includes an inside fluid flow path provided from the second communication hole to the intake port. The separate member is fixed to the cover member to define the inside fluid flow path.

Vehicle drive apparatus

A first electric motor cooling flow passage (A) and a first electric motor lubrication flow passage (A) supply oil from an electric oil pump () through the outer side of one end (E) of the first electric motor (A) to the portions (A, A) of the first electric motor (A) which are to be cooled/lubricated. A second electric motor cooling flow passage (B) and a second electric motor lubrication flow passage (B) supply oil from the electric oil pump () through the outer side of the other end (E) of the second electric motor (B) to the portions (B, B) of the second electric motor (B) which are to be cooled/lubricated.

Vehicle driving device

A drive device for a vehicle includes a first motor, a first case, a second motor, a second case, a right-and-left communication passage, and a sensor. The first case houses the first motor and has a left reservoir to store liquid fluid. The second case houses the second motor and has a right reservoir to store liquid fluid. The right-and-left communication passage communicates with the left reservoir and the right reservoir. The sensor is configured to detect a property of the liquid fluid and disposed in the right-and-left communication passage.

Drive device for vehicle

A hybrid vehicle includes an internal combustion engine, an exhaust passageway, and a driving system having a first and a second motors and a housing which houses the first and the second motors. The driving system is disposed further rearwards than the internal combustion engine in a front-rear direction of the vehicle. The exhaust passageway extends from the internal combustion engine towards a rear side of the vehicle and is disposed so as to surround: a first plane passing through a front end of the housing and perpendicular to the front-rear direction; a second plane passing through a rear end of the housing and perpendicular to the front-rear direction; a third plane passing through a left end of the housing and perpendicular to a left-right direction; and a fourth plane passing through a right end of the housing and perpendicular to the left-right direction.

Hybrid vehicle

A drive deviceA includes: electric motorsA andB that outputs drive powers; and planetary gear reducersA andB disposed between axlesA andB connected to cylindrical shaftsA andB serving as the output shafts of the electric motorsA andB and to rear wheels LWr and RWr. The drive deviceA further includes: a one-way power transmission device that transmits the one-way rotation power of the electric motorsA andB to the axlesA andB; and a two-way power transmission device that transmits the two-way rotation power of the electric motorsA andB to the axlesA andB. The one-way power transmission device and the two-way power transmission device are disposed on transmission passages from the electric motorsA andB to the axlesA andB.

Drive device and vehicle with same

In a power transmission system, a ring gear of a first speed reducer and a ring gear of a second speed reducer are coupled to each other and have the same rotational axis. An engagement portion between the ring gear and a planetary gear is formed such that, when a first motor generates a rotational torque in the forward direction, a force acts on the ring gear in a direction approaching the second speed reducer in the rotational axis direction. An engagement portion between the ring gear and a planetary gear is formed such that, when a second motor generates a rotational torque in the forward direction, a force acts on the ring gear of the second speed reducer in a direction of approaching the first speed reducer in the rotational axis direction.

Power transmission system

Two motor and planetary gear type speed reducers are disposed sequentially from an outer side in a width direction of a vehicle, whereby the speed reducers are disposed between the motors. A radially outer edge of a ring gear of one of the speed reducers is formed smaller than the smaller one of the two radially outermost edge portions of the motors. An offset space that is recessed further radially than an imaginary line that connects the radially outermost edge portion of one motor with the that of the other motor is provided radially outwards of the ring gear of one of the speed reducers, and at least part of a breather chamber of a breather unit and at least part of a strainer accommodation compartment are disposed within the offset space. It is thus possible to expand a volumetric capacity room that communicates with an interior of a case.

Vehicle drive system

A control system that performs control of an electric motor is described. The control system may include a rotating body inertia torque computing unit that uses a rotational state of a vehicle wheel when braking is applied to the wheel to calculate an inertia torque of rotating bodies residing within a span behind the wheel, among members that rotate by the driving force of the electric motor. The control system also may include a controller that performs control of the electric motor to cancel the inertia torque of the rotating bodies based on the calculation result from the rotating body inertia torque computing unit.

Methods and systems for controlling an electric motor

A rear wheel driving apparatus () includes: a first right-left communication passage (FP) through which a left reservoir (RL) and a right reservoir (RR) are communicated with each other; and a second right-left communication passage (SP) which is provided in parallel with the first right-left communication passage (FP) and through which the left reservoir (RL) and the right reservoir (RR) are communicated with each other. Thus, flowability of a liquid fluid stored in a case () is enhanced, and smoothing of a fluid level is enabled.

Vehicle driving apparatus

A supporting structure for a planetary gear mechanism includes a planetary carrier, a first bearing, and a second bearing. The planetary carrier includes a rotation shaft and an arm portion. The rotation shaft extends in an axis direction to support a planetary gear of the planetary gear mechanism to be rotatable about a rotational axis along the axis direction. The rotation shaft includes a first end and a second end opposite to the first end along the rotational axis. The first and second bearings are disposed on a first side of the planetary gear in the axis direction. The planetary carrier is radially supported by the first and second bearings without a bearing which radially supports the planetary carrier in the casing and which is provided on a second side of the planetary gear in the axis direction.

Supporting structure for planetary gear mechanism

An electromagnetic brake interposed between a fixed housing and a rotating member. The electromagnetic brake includes a multiplate brake mechanism, a ringlike core member fixed through an annular brake guide inside the fixed housing, an exciting coil accommodated in an annular groove formed on the core member, and a ringlike armature member arranged radially outside of the core member. Each of the core member and the armature member has a plurality of tapering surfaces. The tapering surfaces of the core member are respectively complementary in shape to the tapering surfaces of the armature member. The electromagnetic brake further includes a cylindrical pressure member movable in a direction of pressing the multiplate brake mechanism. The cylindrical pressure member has one end fixed to the armature member and another end engaged with the multiplate brake mechanism.

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Wako, Japan

Keiichi Ooiso