Abstract:
PROBLEM TO BE SOLVED: To provide a display device for displaying the operating state of a hybrid vehicle such as economical driving or not after considering the efficiency change of a power train caused by the state change of the vehicle. SOLUTION: The display device comprises a display means 10 displaying the operating state of the hybrid vehicle 90, and a display control means 20 for controlling the display of the display means based on a specific threshold. The display control means changes the specific threshold based on the vehicle state. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an accelerator opening display device capable of displaying information for inducing so as not to deviate from an operation area suitable for fuel consumption efficiency. SOLUTION: The accelerator opening display device comprises an accelerator opening detection means 12 for detecting the accelerator opening, a target opening extraction means 14 for extracting the target accelerator opening of the accelerator opening, and display means 15a, 20 which display the target opening display value corresponding to the target accelerator opening and the display value of the accelerator opening to be detected. The display means is characterized in that the target opening display value is always made to be the display of a predetermined value irrespective of the target accelerator opening extracted by the target opening extraction opening means 14. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To enhance convenience for users in setting a target value of a residual capacity (SOC) of a battery, and to continuously supply electric power necessary for driving from a power storing means to a motor when an automobile travels by power from a prime drive mover and the motor. SOLUTION: The automobile travels by outputting power from an engine to front wheels. When the frequency of the establishment Nav of the four-wheel driving condition of traveling by outputting power from the motor to rear wheels is higher than a threshold Nth, the target value SOC* of the residual capacity (SOC) of the battery is set to a value SOC2 (90%), wherein power supplied from the battery to the motor is larger than power supplied when the frequency of establishment Nav is less than the threshold Nth (steps S220, S240). The target value SOC* can be set corresponding to the frequency of the establishment Nav to enhance the convenience for users as compared with that when the target value is changed by a switch operation. Furthermore, when the frequency of the establishment Nav of the four-wheel traveling condition is high, the target value SOC* can be set at a higher value, allowing the motor to be driven more continuously. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a charging/discharging controller of a secondary battery, where battery temperature is estimated accurately without time lag, and charging/discharging is controlled based on the estimated battery temperature. SOLUTION: A hybrid ECU executes a program, including a step (S1010) of calculating the SOC of a battery, a step (S1020) of calculating initial WIN (charging side limit power) and initial WOUT (discharging side limit power), a step (S1030) of detecting the outside air temperature and the battery temperature, a step (S1040) of detecting the battery current level, a step (S1050) of calculating the estimated battery temperature, steps (S1060, S1070) of calculating the load limitation ratio using the higher one of the estimated battery temperature and the detected battery temperature, and a step (S1110) of calculating the final WIN and final WOUT by using the output limiting ratio. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a control method for deceleration of a hybrid vehicle which can suppress a sudden change in the engine brake amount during deceleration of a vehicle to reduce a torque shock. SOLUTION: The control method for deceleration of a hybrid vehicle is switchably constituted between an E mode (first mode) for decelerating by increasing the regeneration amount of a motor generator by automatically cutting off a clutch during deceleration without applying an engine brake, and an M mode (second mode) for decelerating by applying an engine brake while the clutch is engaged, and for regenerating with the motor generator. Travelling information is read (S10) and, when a mode is switched from one mode to another (S12 affirmation) at the time of deceleration of a vehicle (S11 affirmation), an actual engine brake torque Tenga is calculated (S13 to S15) from a clutch stroke Cst, an actual engine torque Teng and a given map, to gradually change the regeneration torque Tmg in view of the magnitude thus calculated. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a vacuum pump control method and mounting structure for a diesel hybrid vehicle, capable of appropriately maintaining negative pressure inside a negative pressure tank during EV traveling. SOLUTION: Negative pressure inside the negative pressure tank is detected during EV traveling (Yes in Step S10, Step S11), and when negative pressure runs short, an engine is started and a vacuum pump is driven by idle driving (Yes in Step S12, Step S13). After start of the engine, charge amount of a battery is detected (Step S14), and when the charge amount is below a predetermined value, a clutch is engaged and power generation control is performed by engine traveling (No in Step S15, Steps S19 to S21). When the charge amount of the battery exceeds the predetermined value and a negative pressure value detected again is recovered to a predetermined value, the engine is stopped (Yes in Step S15, Step S16, Yes in Step S17, Step S18). COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress a vibration generated at the initial time of starting a hybrid vehicle when the hybrid vehicle is started by a motor drive. SOLUTION: In the hybrid vehicle, at the initial time of starting by driving the vehicle only with a motor, a vibration-proofing operation which affects a vibration-proofing effect to a wheel drive system by starting the motor only for a period until the rotating speed of the motor exceeds a predetermined value. One of them is to engage a clutch provided between an internal combustion engine and the motor. The other is to switch a speed change gear connected with the motor to a neutral position. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To restore negative pressure for braking operation without restarting an internal combustion engine when the negative pressure for the brake operation is insufficient during electric driving to stop the internal combustion engine in a hybrid vehicle constituted so that the drive control device has the internal combustion engine and the electric motor as a driving source, and a vacuum pump generating the negative pressure for the brake operation is driven by accompanying with the rotation of the internal combustion engine. SOLUTION: When the negative pressure for the brake operation is insufficient during electric driving, the drive control device cranks the internal combustion engine by connecting to a wheel driving system, controls the output of the electric motor so as to compensate cranking friction torque of the internal combustion engine by the electric motor or cranks the internal combustion engine with a starter. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle control device capable of efficiently generating electric power during electric power regeneration and improving acceleration performance at restart while eliminating sense of incongruity at engine stop/restart. SOLUTION: This invented vehicle control device controls a vehicle 0 provided with an engine 2, a powertrain (such as A/T5) transmitting output of the engine 2 to wheels 1, power generation means 4, 9 generating power by rotation of wheels 3 generated by traveling, the wheels 3 contributing power generation at some place on the powertrain (A/T5) during power generation by the power generation means 4, 9, and an engine control means 6 separating connection with the engine 2 and stopping the engine 2. The engine control means 6 stops/restarts the engine 2 according to axle drive energy (or axle torque) of the wheels 1, 3. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for stabilizing engine speed by maintaining the engine speed during the shift at an idling speed or over in a hybrid vehicle. SOLUTION: A hybrid vehicle having an engine and an electric motor comprises a transmission for automatically operating a clutch during the shift, an engine control device to control the operation of the engine, and a transmission control device for controlling the clutch operation of the transmission and the engine for controlling the engine during the clutch operation. When the vehicle is decelerated, and the clutch is uncoupled by the transmission, the engine is controlled not by the transmission control device but by the engine control device. COPYRIGHT: (C)2004,JPO