Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Tomoaki Suzuki

Toshiaki Asada

Kazuhito Sakai

Makoto Ishikawa

Toshimitsu Shiba

Hiroshi Kato

Masataka Sugiyama

Akihiko Ikeda

Satoshi Miyanaga

Kenji Asai

Tomoyuki Kittaka

Toshimisu Shiba

Takuya Tsujiyama

Tadanobu Sobue

Raishiro Wada

Makoto Ohno

An eight-way valve including a housing and a rotary member is provided. The housing includes an annular wall, a first chamber, a second chamber, a third chamber, and a fourth chamber. The annular wall is provided with 16 upper-tier openings and 16 lower-tier openings. The rotary member includes an upper-tier switching part configured to switch between opening and closing of each of the 16 upper-tier openings, and a lower-tier switching part configured to switch between opening and closing of each of the 16 lower-tier openings. The upper-tier switching part includes an upper-tier first communication passage, an upper-tier second communication passage, and an upper-tier closing part, and the lower-tier switching part includes a lower-tier first communication passage, a lower-tier second communication passage, and a lower-tier closing part. Any one of a first space to an eighth space is respectively provided with a port.

Eight-way valve

The switching device includes a six-way valve. The six-way valve includes a lower body (first valve element), an upper body (second valve element), and a drive plate (third valve element). The switching device switches the overlapping state in the Z direction (axial direction) between the opening (first opening) of each of the plurality of groove portions (first groove portions) of the lower body, the groove portion of the upper body (second groove portion), and the through hole of the drive plate by rotating each of the upper body and the drive plate relative to the lower body.

Switching device

A thermal management system includes: an electrical storage device configured to exchange heat with a first flow path; a drive device configured to exchange heat with a second flow path; a radiator provided on a third flow path; a chiller device provided on a fourth flow path; and a switching device. In the thermal management system, during heating control for the electrical storage device, the switching device are controlled so that a connection flow path connecting the first flow path and the fourth flow path is formed and that the connection flow path, the second flow path, and the third flow path are disconnected from and independent of each other.

Thermal management system

An anomaly determination device, an anomaly determination method, and a memory medium for a water pump are provided. An acquisition process acquires an input variable of a map from image data obtained by capturing an outer surface of the water pump. Execution circuitry obtains provisional determination results from maps, respectively. The provisional determination results are respectively obtained by executing the provisional determination processes for output variables output from the maps. A determination finalizing process treats, as a majority of the provisional determination results, a final determination result indicating whether coolant has leaked out of the water pump.

Anomaly determination device, anomaly determination method, and memory medium

In a power transmitting system of a vehicle including a differential gear device including a differential shaft; a first oil pump; a first oil strainer connected to the first oil pump; a second oil pump; a second oil strainer connected to the second oil pump; and a casing within which the engine drive shaft, the differential gear device, the first and second oil pumps, and the first and second oil strainers are accommodated, such that the engine drive shaft and the differential shaft of the differential gear device are spaced apart from each other in a longitudinal direction of the vehicle, the first and the second oil strainers are disposed between the engine drive shaft and the differential shaft of the differential gear device in the longitudinal direction of the vehicle, and are spaced apart from each other in an axial direction of the engine drive shaft.

Vehicular power transmitting system

A starter for an internal combustion engine includes a power transmission mechanism. The power transmission mechanism has an outer race plate fastened to a crankshaft, and a ring gear coupled to a rotational shaft of an electric motor for starting the engine. The power transmission mechanism further has a one-way clutch for permitting torque transmission only from the ring gear to the outer race plate, and two sealing members. Lubricant is supplied from the cylinder block to the interior of the power transmission mechanism for lubricating the power transmission mechanism. The outer race plate has a groove on its contact surface of a contact portion between the crankshaft and the outer race plate. The groove extends in the entire circumferential direction of the crankshaft. This maintains the coupling strength between the outer race plate and the crankshaft, while enhancing the sealing performance of the power transmission mechanism.

Starter for internal combustion engine

The lubricant-return holes are provided in the intermediate portion of the ring gear. Thus, the lubricant stagnating above the first oil sealing member can be easily discharged to the oil pan side via the lubricant-return holes even when the ring gear has stopped rotating in response to the starter motor being turned off after completion of the start of the internal combustion engine. As such, the level of the surface of lubricant stagnating between the ring gear and the outer race member does not rise, and therefore the lubricant surface virtually does not reach the outer race and the one-way clutch that are rotating while the internal combustion engine is running. Thus, bubbling of lubricant and production of sludge, which may otherwise be caused by agitation of the lubricant surface, can be prevented.

Lubrication structure of cranking rotational force transmission mechanism for internal combustion engine

A ring gear is formed by joining a race side-region formed body, a gear side-region formed body and an intermediate region formed body. Accordingly, it is possible to perform processing of an inner race portion of the race side-region formed body with none of the gear side-region formed body and the intermediate region formed body present. By causing the gear side-region formed body and the intermediate region formed body to absorb changes in design depending on the type of internal combustion engine, it is possible to standardize the size and the shape of the race side-region formed body for various engine types. Because the inner race portion, as well as a disposition surface and a contact surface for the seal rings are formed on the same race side-region formed body, it is possible to finish the surfaces with precise positional relationship.

Ring gear, internal combustion engine-starting torque-transmission mechanism, and method of manufacturing ring gear

An outer race support plate to which torque of a pinion gear is transmitted from a ring gear via a one-way clutch and thus rotates a crankshaft is provided separately from a flywheel and is mounted to the crankshaft not via the flywheel. As a result, impact noise produced when the one-way clutch engages is not directly transmitted to the flywheel. Accordingly, noise radiation from the flywheel can be suppressed, thereby enabling noise to be reduced.

Startup torque transmitting mechanism of an internal combustion engine

A torque transmitting mechanism, including a ring gear; a crankshaft side member which rotates in conjunction with a crankshaft; a one-way clutch arranged between the ring gear and the crankshaft; a bearing arranged between the crankshaft or the crankshaft side member and a surface of the ring gear that faces in the opposite direction from the side of the ring gear on which the one-way clutch is arranged; a first oil seal member arranged together with the bearing between the crankshaft or the crankshaft side member and the surface of the ring gear that faces in the opposite direction from the side of the ring gear on which the one-way clutch is arranged, and is arranged on the opposite side of the bearing from the internal combustion engine main body; and a second oil seal arranged between the ring gear and the internal combustion engine main body.

Growing community of inventors

Nagoya, Japan

Tomoaki Suzuki