Abstract: A control device for an internal combustion engine includes an electronic control unit configured to predict a first intake air amount in a case where an overlapping period in which both of an intake valve and an exhaust valve of a cylinder of the internal combustion engine are open is set to be a first period, predict a second intake air amount in a case where the overlapping period is set to be a second period shorter than the first period with a valve timing of the exhaust valve being advanced, predict that scavenging will occur in the overlapping period in a case where the first intake air amount is greater than the second intake air amount, and predict that the scavenging will not occur in a case where the first intake air amount is equal to or smaller than the second intake air amount.

Abstract: A control device for an internal combustion engine includes an electronic control unit configured to predict a first intake air amount in a case where an overlapping period in which both of an intake valve and an exhaust valve of a cylinder of the internal combustion engine are open is set to be a first period, predict a second intake air amount in a case where the overlapping period is set to be a second period shorter than the first period with a valve timing of the exhaust valve being advanced, predict that scavenging will occur in the overlapping period in a case where the first intake air amount is greater than the second intake air amount, and predict that the scavenging will not occur in a case where the first intake air amount is equal to or smaller than the second intake air amount.

Abstract: A work vehicle includes a control unit having a motor switch control unit and a motor command determining unit. The motor switch control unit controls a motor switching mechanism so that a third motor connects to a first motor when a first rotation speed is less than a second rotation speed. The first rotation speed is the rotation speed of the first motor corresponding to that of a rotating shaft of the third motor. The second rotation speed is the rotation speed of the second motor corresponding to that of a rotating shaft of the third motor. When the third motor is connected to the first motor, the motor command determining unit determines a command torque for the first motor and the third motor so that the command torque for the third motor is no more than the command torque for the first motor.

Abstract: A work vehicle includes a control unit having a motor switch control unit and a motor command determining unit. The motor switch control unit controls a motor switching mechanism so that a third motor connects to a first motor when a first rotation speed is less than a second rotation speed. The first rotation speed is the rotation speed of the first motor corresponding to that of a rotating shaft of the third motor. The second rotation speed is the rotation speed of the second motor corresponding to that of a rotating shaft of the third motor. When the third motor is connected to the first motor, the motor command determining unit determines a command torque for the first motor and the third motor so that the command torque for the third motor is no more than the command torque for the first motor.

Abstract: A fuel consumption saving control device for a work vehicle includes: a vehicle speed detector 11 for detecting whether the vehicle is traveling; an accelerator operation detector 16 for detecting whether an accelerator operating member is not operated; a boom operating lever 23 for detecting whether a command to carry out operation to lift a boom which performs cargo carrying work has been issued; and a controller 8 for carrying out control for increasing a speed reducing ratio of a travel transmission 4 when the vehicle speed detector 11 detects that the vehicle is traveling, the accelerator operation detector 16 detects that the accelerator operating member is not operated, and also the boom operating lever 23 detects that the command to lift the boom has been issued.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A fuel consumption saving control device for a work vehicle includes: a vehicle speed detector 11 for detecting whether the vehicle is traveling; an accelerator operation detector 16 for detecting whether an accelerator operating member is not operated; a boom operating lever 23 for detecting whether a command to carry out operation to lift a boom which performs cargo carrying work has been issued; and a controller 8 for carrying out control for increasing a speed reducing ratio of a travel transmission 4 when the vehicle speed detector 11 detects that the vehicle is traveling, the accelerator operation detector 16 detects that the accelerator operating member is not operated, and also the boom operating lever 23 detects that the command to lift the boom has been issued.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A sun gear of a first planetary gear train is connected to an input shaft. A carrier 9 of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other.

Abstract: A single crystal semiconductor manufacturing apparatus in which the concentration of oxygen in a single crystal semiconductor is controlled while pulling up a single crystal semiconductor such as single crystal silicon by the CZ method, a single crystal semiconductor manufacturing method, and a single crystal ingot manufactured by the method are disclosed. The natural convection (20) in the melt (5) in a quartz crucible (3) is controlled by regulating the temperatures at a plurality of parts of the melt (5). A single crystal semiconductor (6) can have a desired diameter by regulating the amount of heat produced by heating means (9a) on the upper side. Further the ratio between the amount of heat produced by the upper-side heating means (9a) and that by the lower-side heating means (9b) is adjusted to vary the process condition. In the adjustment, the amount of heat produced by the lower-side heating means (9b) is controlled to a relatively large proportion.

Abstract: To provide a transmission capable of using pump/motors or generator/motors of smaller maximum torque and of small size. The transmission includes input shaft (4), output shaft (16), a mechanical transmission part interposed between input shaft (4) and output shaft (16) including planetary gear mechanisms (5), (6), and a hydrostatic transmission part interposed between input shaft (4) and output shaft (16) including three pump/motors (21), (25), (31). A rotating shaft of first pump/motor (21) and a rotating shaft of second pump/motor (25) are coupled to the mechanical transmission part. Clutches (34), (35), (36) are provided for coupling a rotating shaft of third pump/motor (31) to at least one of the rotating shaft of first pump/motor (21) and the rotating shaft of second pump/motor (25).

Abstract: A hydro-mechanical transmission system or electromechanical transmission system is described which uses pumps/motors or generators/motors having smaller capacity than those employed in the conventional techniques, irrespective of setting of a mode switching point that is a basis for shifting between an input split mode and a compound split mode. A sun gear 7 of a first planetary gear train 5 is connected to an input shaft 4; a carrier 9 of the first planetary gear train 5 is connected to a sun gear 11 of a second planetary gear train 6 and to a first pump/motor 16; a ring gear 10 of the first planetary gear train 5 is connected to a second pump/motor 20; and a ring gear 14 of the second planetary gear train 6 is connected to an output shaft 25.