摘要:
There is provided a solid oxide fuel cell module comprising a substrate with an internal fuel flow part provided therein, at least a face thereof, in contact with cells, and interconnectors, being an insulator, a plurality of the cells each made of an anode, an electrolyte, and a cathode, stacked in sequence, formed on a surface of the substrate, and the interconnectors each electrically connecting in series the cells adjacent to each other, wherein the respective cells are varied in area along the direction of fuel flow, and solid oxide fuel cell bundled modules using the same. With the solid oxide fuel cell module of a multi-segment type, according to the invention, it is possible to aim at higher voltage and to attain an improvement in power generation efficiency and current collecting efficiency.
摘要:
There is obtained a segmented-in-series solid oxide fuel cell provided with a current turnaround structure and containing a porous electrically insulating substrate having a fuel flow path extending from a fuel feed port to a fuel discharge port, provided therein, and a pair of the top and back surfaces, in parallel with the fuel flow path, together with a pair of side-faces of the porous electrically insulating substrate, in the transverse direction thereof, provided on the exterior thereof, wherein solid oxide fuel cells made up by sequentially stacking an interconnector adjacent to a fuel electrode layer, the fuel electrode layer, an electrolyte layer, and an air electrode layer, and an interconnector adjacent to the air electrode layer in that order so as to be in parallel with the fuel flow path are disposed at intervals on the pair of the top and back surfaces, respectively.
摘要:
In a shift control method, when a speed ratio of an automatic transmission is shifted from a third speed ratio to a first speed ratio before stoppage of a vehicle, a down shift line 3-1 in a shift pattern is shifted to a high-speed side to initiate shifting under a power-OFF condition. A third brake is released by setting the duty ratio of an electromagnetic valve of the third brake at 0% to establish a free condition (neutral condition) in an output shaft of a second transmission. While the duty ratio of an electromagnetic valve of a second clutch in a first transmission mechanism is set at 0%, the duty ratio of an electromagnetic valve of a second brake is gradually increased, so that the shifting from the second clutch to the second brake is made, and the first transmission mechanism is operatively shifted from the third speed ratio to a speed ratio corresponding to the first speed ratio. Then, the third brake is engaged again upon completion of the shifting and after mechanical engagement of a one-way clutch. Consequently, it is possible to reduce shocks in shifting the speed of the vehicle.
摘要:
During downshift operation of an automotive automatic transmission in which a lower-speed clutch for establishing a lower-speed gear is engaged while higher-speed clutch, which has established a higher-speed gear, is disengaged, to increase the turbine rotational speed Nt toward a synchronous rotation speed Ntj associated with the lower-speed gear, speed change control is carried out according to the same control method regardless of whether the engine is in a power-on or power-off state. A target change rate (Nir)' of turbine rotational speed associated with the higher-speed clutch and a target change rate (Nia)' of turbine rotational speed associated with the lower-speed clutch are set, and a change rate (Nia)' of the turbine rotational speed is detected. The transmission torque through the higher-speed clutch is controlled in a feedback manner such that the detected change rate (Nt)' coincides with the change rate (Nir)'. Further the transmission torque through the lower-speed clutch is feedback-controlled such that the change rate (Nt)' coincides with the change rate (Nia)', thereby carrying out downshift.
摘要:
A shift control method for an automotive automatic transmission is provided, which reduces a shift shock particularly at the time of a skip down-shift, and shortens a required shifting time period. An electronic control unit of a shift control apparatus releases the engagement of a clutch of a subsidiary transmission mechanism and engages a one-way clutch so as to establish a gear position not used in the normal speed change when a shift command from the fifth shift position to the third shift position is issued, gradually decreasing a valve opening duty ratio of an electromagnetic valve associated with a brake of a main transmission mechanism from an initial value D.sub.HLi before this gear position is established, determines an average turbine rotation speed changing rate dD.sub.TAVE /dt from the detected turbine rotation speed (S203), and learning correction of the initial value D.sub.HLi is made if the changing rate deviates from a target range (S204-S208).
摘要:
A speed change control apparatus for an automatic transmission includes a transmission control unit for controlling gear-changing. The control unit discriminates a fluid temperature/rotational speed zone based on the hydraulic fluid temperature and the engine speed at the start of gear-changing, and detects a time period from the end of dead-stroke elimination of an engagement-side hydraulic clutch to the start of actual gear-changing. In the case that a condition for executing learning correction is satisfied and if a time period from the end of the dead-stroke elimination to the start of the actual gear-changing is longer than an upper limit, the control unit increases a learning-correction time with which a dead-stroke-elimination time for the discriminated temperature/speed zone is calculated. The learning-correction time is decreased if such a time period is shorter than a lower limit. By carrying out the learning correction for various temperature/speed, occurrences of degraded shift response and shift shocks resulting from the presence of individual difference of the automatic transmission and an increase or decrease in the engine speed or fluid temperature can be prevented.
摘要:
A degree of sporty driving, or degree of load on tires of a vehicle, is detected based on a usage degree of tire performance. A horizontal force exerted on a tire is calculated and estimated based on longitudinal acceleration and lateral acceleration. Then a ratio, of the horizontal force to a maximum limit gripping force of the tire, is determined to enable detection of the load on a tire at all times.
摘要:
A speed change control method for an automatic transmission, which can achieve a smooth skip downshifting even when a driver depresses an accelerator pedal slowly in kickdown. An electronic control unit 6 calculates, at the time when a predetermined time period elapses from the time when a downshifting command from a fourth speed to a third speed is outputted, a difference between the throttle valve opening degree .theta..sub.t1 at that time and the throttle valve opening degree .theta..sub.ts at the time when the downshifting command is outputted, and a change rate (.dwnarw..sub.t1)' of the throttle valve opening degree at the time when the predetermined time period elapses. If the calculated difference is larger than the threshold value .DELTA..theta. and the calculated change rate is higher than the threshold value .DELTA.(.theta.)' (S10, S11), the electronic control unit 6 outputs a command for canceling the command for downshifting from the fourth speed to the third speed, which has already been outputted (S12), and outputs a command for downshifting from the fourth speed to a second speed (S13).
摘要:
A speed change control and apparatus of an automotive automatic transmission causes a turbine rotational speed to change toward a synchronous rotational speed associated with a desired gear stage by engaging a connection-side clutch while disengaging a release-side clutch, to thereby carry out gear-changing. To reduce a speed change shock, a speed change time is rendered stabilized irrespective of vehicle running state, by carrying out feedback control such that the time-dependent change rate (Ns)' of a rotational speed difference between clutch plates and clutch discs of the connection-side clutch becomes equal to a target slip rotational speed change rate (Ni)'.
摘要:
A power transmission apparatus suitable for use with a four wheel drive apparatus of an automobile which can prevent spouting of working fluid through a sealing portion or the like and introduction of external air into the apparatus through a sealing portion. The apparatus comprises a hydraulic transmission coupling mechanism of the vane pump type connected to a pair of shafts to transmit driving force between the shafts and having a pump chamber formed therein. A tank is provided in an integral relationship with the coupling mechanism and accommodates working fluid in an enclosed condition therein. A volume variation absorbing mechanism is provided near an axis of rotation of the coupling mechanism for absorbing a variation in volume of the working fluid in the pump chamber.