摘要:
Torque shares that express an exchange of torque are set as a constraint condition of an equation of motion of an automatic transmission, so it is suitable to control an exchange of torque between engagement devices, which is difficult in shift control, and it is possible to solve the equation of motion. In other words, it is possible to handle any shift pattern with the use of a predetermined shift model. Furthermore, at the time of a shift in which two elements are released and two elements are engaged, a first shift and a second shift in each of which one element is released and one element is engaged are carried out, so three control operation amounts are used in each of the first shift and the second shift, with the result that it is possible to solve the equation of motion.
摘要:
A device for controlling shift in a vehicle may include a data detector configured to detect data for a shift control and a controller configured to determine a short-term driving tendency of a driver using the data, determine a long-term driving tendency of the driver using the short-term driving tendency of the driver, and control shift in the vehicle in consideration of a running mode of the vehicle and the long-term driving tendency which are determined from the data.
摘要:
The disclosed automatic transmission controller is capable of changing shift timing set for non-flat roads in correspondence to a judged driver type. The automatic transmission controller executes a driver type judging routine SUB2 to generate a judgment output related to the driver type by monitoring the driving of the vehicle and judges the driver type based on the judgment output. Shift timing is changed in running a non-flat road to correspond to the judged driver type. The shift timing in running the non-flat road may be changed by changing from an uphill slope mode 1 shift map to an uphill slope mode 2 shift map corresponding to the driver type or by increasing an upshift inhibiting section of a single map.
摘要:
The disclosed automatic transmission controller is capable of changing shift timing set for non-flat roads in correspondence to a judged driver type. The automatic transmission controller executes a driver type judging routine SUB2 to generate a judgment output related to the driver type by monitoring the driving of the vehicle and judges the driver type based on the judgment output. Shift timing is changed in running a non-flat road to correspond to the judged driver type. The shift timing in running the non-flat road may be changed by changing from an uphill slope mode 1 shift map to an uphill slope mode 2 shift map corresponding to the driver type or by increasing an upshift inhibiting section of a single map.
摘要:
The invention relates to a method of adjusting the transmission ratio of a continuously variable gear. The position of a current operating point (B_akt) in a predetermined driving range is constantly adjusted in accordance with the driving situation. The position of the operating point is also determined by range boundaries (UG, OG) which can be varied in accordance with the driving resistance and the driver's manner of driving. The method is characterized in that it simplifies development and application.
摘要:
The invention concerns a control system for shifting gears in an automatic shift transmission (3) by using fuzzy logic methods. Vehicle parameters form input variables (8) that are continuously detected by appropriate means (9). These input variables are further processed in downstream functional blocks (11, 12, 13, 14, 15, 16 and 17). Gearshifting points that ensure an economical driving are determined in the functional block (11) according to fuzzy logic methods. Besides a set of basic fuzzy logic generating rules, additional rules are used to improve driving. For that purpose, the input quantity "desired performance" is taken into consideration in both sets of rules. The desired performance may be a desired acceleration or a desired deceleration. A closed regulation circuit is formed by converting the fictitious quantity desired performance and the quantity driving manner to a physical quantity.
摘要:
A control device for an automatic motor vehicle transmission reduces engine torque during a shifting operation, in particular a shifting operation in a traction mode, in order to increase smoothness of shifting. The engine torque reduction is begun at the earliest upon reaching a free-wheel point of the transmission and is ended shortly before a synchronizing point of the transmission is reached. The free-wheel point and the synchronizing point of the transmission are ascertained from rpm differences in the gearshift elements involved in the particular switching operation. Differential rpm thresholds used in the process and the intensity of the torque reduction are ascertained with fuzzy systems.
摘要:
A power train controller and control method are provided for a passenger car driven by a combustion engine and an automatic gear changing transmission. Control sensors detect a current operating state of the passenger car. Three different modes of operation, including sports mode, economy mode, and comfortable mode are selected by the driver. Depending on the selected mode, the automobile transmission is controlled in different shifting patterns as a function of the sensed vehicle operating conditions.
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 driver regards a relative acceleration of a subject vehicle with respect to an object such as a preceding vehicle, an obstacle and the like as one having highest priority, and performs control such that deceleration is immediately started even if a relative velocity is small if the relative acceleration is large. Taking note of this point, the relative acceleration between the subject vehicle and the object is detected, and it is judged whether or not the subject vehicle and the object relatively approach each other at a relative acceleration not less than a predetermined value. A vehicle velocity is controlled such that the relative acceleration is not more than a predetermined target relative acceleration (for which a direction for approach is positive) when the subject vehicle and the object relatively approach each other at a relative acceleration not less than the predetermined value. Thus, the start of deceleration felt by the driver is adequate.