Abstract:
PROBLEM TO BE SOLVED: To smoothly attain the gear change of a transmission even when the input/output of a capacitor device such as a secondary battery is limited. SOLUTION: The torque change of a motor is requested for smoothly switching the status of the gear of a transmission interposed between a motor and a driving shaft (S170), and when the torque change is not available in the range of the input/output limits Win, Wout of a battery (S200), a torque instruction Tm1* of another motor is reset so as to be within the input/output limitation of the battery (S210, S250), and a request power Pe* is also changed so that the revolution Ne of an engine can be set so as to be the target revolution Ne* (S230, S270). Thus, it is possible to smoothly switch the status of the gear of the transmission. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress the speed change shock at the time of switching the speed change stage of a transmission. SOLUTION: In an automobile where the first motor, to the sun gear of a planetary gear mechanism, an engine, to a carrier, and a drive shaft, to a ring gear, are attached respectively, and the second motor is attached via a transmission to the drive shaft, this device switches (S120-S170) the speed change stage after changing a motor operation mode into an engine/motor operation mode, if positive torque (driving force) is requested for the drive shaft when a request for speed change of the transmission is made amid the running in the motor operation mode. Since it can make the magnitude of the torque to be outputted from a motor MG2 smaller than that in the motor operation mode, by making the directly transmitted torque from the engine act upon the drive shaft in the engine/motor operation mode, it can suppress the speed change torque at switching of the speed change stage. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent a motor from being driven with upper limit revolutions, by limiting the driving force outputted to a driving shaft with a more appropriate timing, and to more surely prevent the motor from being driven with the upper limit revolutions, without accompanying the limitation of excessive driving force, irrespective of driving resistance, in a power outputting device and a hybrid car incorporating this device, and a control method of the power outputting device. SOLUTION: In the hybrid car in which an engine, a motor MG1, and a driving shaft are connected to a planetary gear mechanism and another motor MG2 is connected to the driving shaft via a transmission; the drive of the engine and the two motors is controlled by setting limit-starting revolutions Nm2ref, in such a way as to become smaller the larger the rotational acceleration α of the motor MG2 becomes, if the transmission is in a locked position to the Lo gear by an abnormality (S160), by setting the torque upper limit value Trmax, in such a way as to become smaller the larger the revolutions Nm2 of the motor MG2 are than the limit-starting revolutions Nm2ref, when the revolutions Nm2 of the motor reach the limit-starting revolutions Nm2ref (S170, S180), and by setting the effective torque T* that limits the demanded torque Tr* of the driving shaft by the torque upper limit value Trmax (S190). This capability of limiting the demanded torque Tr* with appropriate timing makes it possible to prevent the excessive revolutions of the motor MG2, while suppressing the excessive torque limit at the occurrence of the abnormality to the transmission. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve a driver's convenience with reference to display of travel distance of a hybrid vehicle.SOLUTION: An indicator 510 indicating a ratio of a first distance 501 including a travel distance of a plug-in hybrid vehicle in a CS (Charge Sustaining) mode and a travel distance of the plug-in hybrid vehicle in a CD (Charge Depleting) mode with an engine driven, to a second distance 502 which is a travel distance of the hybrid vehicle in the CD mode with the engine stopped, is displayed on a display 192. In the CS and CD modes, the plug-in hybrid vehicle runs using at least either driving force of the engine or a second MG (Motor Generator). An electric power charged into a battery in the CD mode is smaller than that in the CS mode.
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle that can appropriately perform, according to a road condition warning that shows output of driving force for running is limited.SOLUTION: An electric vehicle 100 includes: a motor generator 1 that outputs driving force for running; a battery 3 for storing electric power for driving the motor generator 1; and a main ECU 11 to control an output limitation alarm lamp 32a that informs warning that shows the output of driving force for running is limited. Then the main ECU 11 is configured to set a condition to inform warning to an output limitation alarm lamp 32a according to the road information (step S2) while obtaining the road information from a navigation device 31 (step S1).
Abstract:
PROBLEM TO BE SOLVED: To precisely estimate an EV driving range when an air conditioner is operated.SOLUTION: An electrical driving range display device calculates a travelable distance (reference travelable distance Dkijun) during air conditioner non-operation on the basis of electric costs during the air conditioner non-operation and a remaining capacity of a battery 64. A display device displays a reference travelable distance Dkijun on an EV driving range display 72 during the air conditioner non-operation. Furthermore, during air conditioner operation, a correction coefficient at the present time is calculated on the basis of "predetermined and stored specific relation between power consumption of an air conditioner and the correction coefficient" and "a value (main argument corresponding to the actual power consumption of the air conditioner at the present time). An electrical driving range for display is calculated by multiplying the reference travelable distance (Dkijun) by the calculated correction coefficient, and the electrical driving range for display is displayed on the EV driving range display 72.
Abstract:
PROBLEM TO BE SOLVED: To provide a plug-in hybrid vehicle that can improve calculation accuracy in electricity cost.SOLUTION: While a plug-in hybrid vehicle travels, vehicle speed at the time when an engine is transferred from a stepping state to a driving state is stored as a vehicle speed threshold (step ST4), and then when the engine is stopped (step ST6), acquisition of information on power consumption amount for electricity cost learning and travelling distance is not executed while the vehicle speed is reduced to the vehicle speed threshold (while it is determined No in a step ST7). Accordingly, a difference caused by an increase in a vehicle kinetic energy due to vehicle acceleration is not reflected on a learning electricity cost, accuracy for the learning electricity cost is improved, and an EV travelable distance is accurately calculated.
Abstract:
PROBLEM TO BE SOLVED: To suppress reduction of fuel economy of an internal combustion engine, in a plug-in hybrid system capable of performing battery charging amount increasing control.SOLUTION: In a plug-in hybrid system capable of performing battery charging amount increasing control for driving an electric generator by engine power during warming-up operation and charging electric power generated by the electric generator to a battery, performance of the battery charging amount increasing control during the warming-up operation is prohibited when a battery charging amount at a start time of warming-up operation is a first electric storage amount or more, when a battery charging amount at a completion time of warming-up operation when the battery charging amount increasing control has been performed during the warming-up operation is predicted to be a second electric storage amount or more, or when a battery electric storage amount at the completion time of warming-up operation when the battery charging amount increasing control has not been performed during the warming-up operation is predicted to be a third electric storage amount or more.
Abstract:
PROBLEM TO BE SOLVED: To provide a plug-in hybrid vehicle that can improve the calculating accuracy of the electricity cost.SOLUTION: In the electricity cost learning when the running mode of the plug-in hybrid vehicle is a CD mode, when the driving integration time of the engine in one trip reaches the predetermined time (YES determination in step ST7), the integrated value of the power consumption in the trip and the integrated value of the running distance are invalidated this time (step ST10), and the trip is not reflected in the electricity cost learning this time. As a result, it is evaded that the error that originates the fact that the information of the power consumption and the running distance is not obtained when the engine drives at the travel of the uphill road and the travel of a downhill road is included in the learning electricity cost, improves the accuracy of the learning electricity cost, and an EV travel distance is calculated accurately.