摘要:
A shift control apparatus for a vehicle automatic transmission, including: a device (96) for determining whether an intake air quantity (Q/N) per revolution of a vehicle engine (10) exceeds a predetermined threshold; a memory (100) for storing a first and a second shift control data map for shifting a vehicle transmission (12), the first shift control data map representing first shift boundary lines each representing a relationship between the vehicle speed (SPD) and the intake air quantity, while the second shift control data representing second shift boundary lines each representing a relationship between the vehicle speed and a shift control parameter (TA, PA) which reflects an operation amount of an accelerator pedal (58); a map switching device (96) for selecting one of the first and second shift control data maps, the map switching device replacing the first shift control data map by the second shift control data map when the intake air quantity exceeds the predetermined threshold; and a device (96) for shifting the transmission, according to the selected first or second shift boundary lines.
摘要:
A shift control apparatus for an automatic transmission (20) of a motor vehicle, including a sensor (11) for detecting a throttle valve (24) opening which regulates an intake air quantity supplied to the vehicle engine, an engine speed senior (12) for detecting the engine speed, a vehicle speed sensor (13) for detecting the vehicle running speed, a calculating device (15) for calculating the intake air quantity for a steady running of the vehicle, based on the detected throttle valve opening and engine speed, a processing device for processing the calculated intake air quantity to compensate the calculated intake air quantity for a first-order time lag and obtain an estimated intake air quantity, and an automatic shift control device (16) for automatically selecting an optimum operating position of the automatic transmission, based on the transient intake air quantity and the detected vehicle running speed, according to a predetermined shift control pattern.
摘要:
Provided is an electric vehicle shift control device which may suppress the occurrence of busy shifting. The shift control device is installed in the electric vehicle including a motor generator (MG) as the drive source, and an automatic transmission (3) which is connected to the motor generator (MG); this electric vehicle shift control device is provided with a shift controller (21) which performs shift control of the automatic transmission (3) using a shift line previously prepared, wherein the shift controller (21) has, as shift lines, an electricity consumption prioritized shift line configured with priority place to improve electricity consumption ratio and a driving force prioritized shift line with priority placed on suppression of the shift frequency. Further, the shift control device is configured, after completion of shift control using the electricity consumption prioritized shift line, to use the driving force prioritized shift line for a predetermined time.
摘要:
Provided is an electric vehicle shift control device which may suppress the occurrence of busy shifting. The shift control device is installed in the electric vehicle including a motor generator (MG) as the drive source, and an automatic transmission (3) which is connected to the motor generator (MG); this electric vehicle shift control device is provided with a shift controller (21) which performs shift control of the automatic transmission (3) using a shift line previously prepared, wherein the shift controller (21) has, as shift lines, an electricity consumption prioritized shift line configured with priority place to improve electricity consumption ratio and a driving force prioritized shift line with priority placed on suppression of the shift frequency. Further, the shift control device is configured, after completion of shift control using the electricity consumption prioritized shift line, to use the driving force prioritized shift line for a predetermined time.
摘要:
A method is provided for selecting between economy mode and performance mode shift schedules for a transmission in a motor vehicle. A desired vehicle acceleration profile is specified, and a cumulative net tractive force of the vehicle is determined over the desired vehicle acceleration profile. A change in vehicle speed over the desired vehicle acceleration profile is also determined. A vehicle mass-based shift schedule breakpoint is computed as a function of the cumulative net tractive force of the vehicle and the change in vehicle speed over the desired vehicle acceleration profile. The vehicle mass-based shift schedule breakpoint is compared to a current vehicle mass indicator, and one of the economy mode and performance mode shift schedules is selected for operation of the transmission based on the comparison. Shifting between gear ranges of the transmission is controlled using the selected one of the economy mode and performance mode shift schedules.
摘要:
In control for a vehicle provided with a transmission in which a speed or shift range is changed by a shift operation performed by a driver, and a shift indicator that indicates a shift operation into an optimum speed or shift range selected based on a running state of the vehicle to the driver, it is determined whether an amount of fuel remaining in a fuel tank (64) is low, and if it is determined that the amount of fuel remaining is low, a speed or shift range set in advance such that priority is given to fuel efficiency performance over power performance is selected as the optimum speed or shift range based on the running state of the vehicle (10).
摘要:
In control for a vehicle provided with a transmission in which a speed or shift range is changed by a shift operation performed by a driver, and a shift indicator that indicates a shift operation into an optimum speed or shift range selected based on a running state of the vehicle to the driver, it is determined whether an amount of fuel remaining in a fuel tank (64) is low, and if it is determined that the amount of fuel remaining is low, a speed or shift range set in advance such that priority is given to fuel efficiency performance over power performance is selected as the optimum speed or shift range based on the running state of the vehicle (10).
摘要:
A system for controlling a motor vehicle automatic transmission comprises a means of estimating engine torque and a means of estimating vehicle acceleration, a map (3) of the resistive forces to which the vehicle is subjected as a function of its speed, stored maps of gear shifts suited to various road profiles, and a system (1) for selecting configured gear shift laws in order, using the said engine torque, the said acceleration and the said map of resistive force, to determine the current slope of the road surface along which the vehicle is moving. The said system for selecting the gear shift laws comprises a filter (4) delivering a mean value of this current slope, and the said gear shifts law selection system is configured to impose on the transmission at least one ascent gear shift law if the current slope is steeper than a first threshold (S3), at least one horizontal terrain gear shift law if the current slope and the mean slope value are respectively lower than a second threshold (S2) lower than the first and lower than a third threshold (S1) lower than the second, and at least one intermediate gear shift law that is somewhere between the ascent law and the horizontal terrain law if the current slope is less than the second threshold (S2) and, at the same time, the mean value of slope is greater than the third threshold (S1).