Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Kohei Hori

Kiyoharu Nakamura

Yasuo Kinoshita

Motohiro Tsuzuki

Makoto Ueno

Hiromichi Hashimoto

Motohiro Tsuzukui

Osamu Satoh

A rotation/linear motion conversion mechanism provided with an annular shaft, a sun shaft arranged inside the annular shaft, planetary shafts arranged around the sun shaft, and a first gear mechanism and a second gear mechanism, which transmit force between the annular shaft and the planetary shafts. Each planetary shaft includes a first planetary gear, which configures part of the first gear mechanism, and a second gear, which configures part of the second gear mechanism. The planetary shaft is configured to permit relative rotation between the first planetary gear and the second planetary gear.

Mechanism for converting rotational motion into linear motion

A split engine comprising a plurality of cylinders divided into a first cylinder group and a second cylinder group. The second cylinder group is connected to the outside air via a second surge tank. The first cylinder group is connected to the second surge tank via a first surge tank. A shut-off valve is arranged in the connecting portion of the first surge tank and the second surge tank. When the level of the load of the engine becomes higher than a predetermined level, the shut-off valve is slowly opened by a DC motor.

Split engine

A split engine comprising a plurality of cylinders divided into a first cylinder group and a second cylinder group. The second cylinder group is connected to the outside air via a second surge tank. A throttle valve is arranged in the inlet of the second surge tank. The first cylinder group is connected to the second surge tank. A shut-off valve is arranged in the connecting portion of the first surge tank and the second surge tank. The first surge tank is connected to the exhaust manifold of the engine via an exhaust-gas recirculation passage. The recirculation control valve is arranged in the exhaust-gas recirculation passage. When the level of the load of the engine becomes higher than a predetermined level, the shut-off valve opens, and the recirculation control valve closes. At this time, if the opening speed of the throttle valve is lower than a predetermined speed, the opening operation of the shut-off valve is started when the closing operation of the recirculation control valve is completed. However, if the opening speed of the throttle valve is higher than the predetermined speed, the opening operation of the shut-off valve is started when the closing operation of the recirculation control valve is started.

A split engine comprising a plurality of cylinders which are divided into a first cylinder group and a second cylinder group. The second cylinder group is connected to the outside air via a second intake passage. The first cylinder group is connected to a first intake passage which is, in turn, connected to the second intake passage via a shut-off valve. The first intake passage is connected to the exhaust passage of the engine via an exhaust-gas recirculation passage. When the level of the load of the engine becomes high, the exhaust-gas recirculation passage is shut off, and the shut-off valve is initially opened at a high speed and then opened at a low speed.

A split engine comprising a plurality of cylinders divided into a first cylinder group and a second cylinder group. The second cylinder group is connected to the outside air via a second surge tank. The first cylinder group is connected to the second surge tank via a first surge tank. A shut-off valve is arranged in the connecting portion of the first surge tank and the second surge tank. The supply of fuel into both of the cylinder groups is stopped when a predetermined time period has elapsed after the decelerating operation is started. Then, the shut-off valve opens when a predetermined time period has elapsed after the supply of fuel is stopped.

Growing community of inventors

Susono, Japan

Kohei Hori