Abstract: A method and an apparatus for controlling driving power from a powertrain of a motor vehicle comprising a kickdown switch, wherein an activation of the kickdown switch triggers a default action of temporarily requesting an increase of a maximum power available from the powertrain, the method comprising: recognizing that a speed limiter, setting an upper speed limit for the vehicle speed, is active, comparing a current vehicle speed to a predefined speed threshold, which is below the upper speed limit, and if the current vehicle speed is above the speed threshold and the speed limiter is active, triggering an altered action in response to the activation of the kickdown switch.

Abstract: Methods and systems are provided for a differential disconnect assembly of a vehicle, the differential disconnect assembly including a dog clutch used to engage and disengage a gear of a differential of the vehicle from a transmission of the vehicle. In one example, a method for operating a dog clutch comprises de-energizing a solenoid coupled to the dog clutch to initiate dog clutch disengagement; and during disengagement of the dog clutch when a return spring coupled to a first toothed interface of the dog clutch applies a first force on the first toothed interface in a first direction away from a second toothed interface, transiently re-energizing the solenoid that applies a second force to the first toothed interface in a second direction which is opposite the first direction.

Abstract: A perception module is configured to perceive a driving environment surrounding an autonomous driving vehicle (ADV) based on sensor data, and to generate perception information using various perception models or methods. The perception information describes the perceived driving environment. Based on the perception information, a planning module is configured to plan a trajectory representing a route or a path for a current planning cycle. The ADV is then controlled and driven based on the trajectory. In addition, the planning module determines a critical region (also referred to as a critical area) surrounding the ADV based on the trajectory in view of a current location or position of the ADV. The metadata describing the critical region is transmitted to the perception module via an application programming interface (API) to allow the perception module to generate perception information for a next planning cycle in view of the critical region.

Abstract: A utility vehicle comprises a traveling driving power source which generates rotational driving power for driving a drive wheel; a continuously variable transmission including an input shaft to which the rotational driving power transmitted from the traveling driving power source is input, an output shaft which outputs the rotational driving power toward the drive wheel, a drive pulley provided at the input shaft, a driven pulley provided at the output shaft, and a belt wrapped around the drive pulley and the driven pulley; a clutch which is disposed in a driving power transmission path at a location that is between the belt and the drive wheel and is capable of disconnecting the driving power transmission path; and a clutch actuator which operates the clutch.

Abstract: Provided are an automobile chassis integration control method and system. The control method includes the steps that: a cooperative control unit receives a first engine torque output by an EMS, a first engine torque limiting request output by a four-drive controller, a second engine torque limiting request output by an ESP, and a third engine torque limiting request output by a TCU from a CAN bus respectively; and the cooperative control unit cooperatively controls the first engine torque limiting request, the second engine torque limiting request, the third engine torque limiting request, and the first engine torque, and outputs a second engine torque as an engine execution torque.

Abstract: An apparatus for shift control in a vehicle is provided. The apparatus includes storage configured to store speed profiles corresponding to respective gears of the vehicle for each of a plurality of downhill slopes, and a controller configured to perform the shift control in the vehicle based on the speed profiles, when the vehicle coasts on a downhill road.

Abstract: An apparatus and a method for controlling a transmission of a vehicle may include a determining device configured to determine whether a curved road is present within a predetermined distance in front of the vehicle, based on information on a front road, a calculating device configured to correct, based on information on a gradient of the curved road, a vehicle speed in starting cornering of the vehicle on the curved road, determine an expected lateral acceleration based on the corrected vehicle speed and information on a curvature of the curved road, and determine a pattern correcting coefficient based on the determined expected lateral acceleration, a pattern correcting device configured to correct a gearshifting pattern of the transmission, which is preset, based on the pattern correcting coefficient, and a control device connected to the determining device, the calculating device and the pattern correcting device and configured to control the transmission based on the corrected gearshifting pattern when t

Abstract: Control of a Vehicle Having an Automatic Transmission to Compensate for Ambient Air Density A method of controlling an automatic transmission (24) of a vehicle (10), the method comprising: receiving a signal indicative of a vehicle operating mode; obtaining a base map defining gear shift points for the transmission (24) based on the indicated vehicle operating mode; obtaining a torque loss map defining gear shift points for the transmission (24) based on a predetermined minimum value of density; and controlling the transmission (24) based on the base map if the base map defines gear shift points at higher engine speeds or vehicle speeds than the corresponding gear shift points defined by the torque loss map.

Abstract: An apparatus and a method for controlling a transmission of a vehicle may include a determining device configured to determine whether to perform a front-vehicle-based deceleration following control based on information on the vehicle and information on the front vehicle when coasting of the vehicle is started, a calculating device configured to determine a target speed of the vehicle and a target distance based on a position, a speed, and a moving distance of the front vehicle, when the front-vehicle-based deceleration following control is determined to be performed, a gearshifting stage deciding device configured to decide a final gearshifting stage of the transmission based on the determined target speed and the target distance by configuring a deceleration profile for each gearshifting stage of the transmission, and a controller to control the transmission based on the final gearshifting stage.

Abstract: A method is provided for establishing a location of a device based on a global navigation satellite system. Methods may include: receiving sensor data of an environment of the apparatus; estimating object location within the environment based on the sensor data; receiving a static elevation mask; generating a learned-elevation mask based, at least in part, on the static elevation mask and the estimated object location within the environment; receiving signals from a plurality of Global Navigation Satellite System (GNSS) satellites; filtering the signals from the plurality of GNSS satellites to eliminate from consideration a subset of satellites established as not having a line-of-sight with the apparatus; establishing a location of the apparatus from remaining satellites established as having a line-of-sight with the apparatus; and providing for at least one of route guidance or autonomous vehicle control based on the established location of the apparatus.

Abstract: A shift range control device includes an angle detector, a valley position learner, and a validity determiner. The angle detector detects a rotation angle of an output shaft of a shift actuator. The valley position learner learns the rotation angle of the output shaft when a locker is positioned at a valley bottom of a recess as a valley position based on a detection angle of the angle detector. The validity determiner determines validity of a learning value of the valley position learner.

Abstract: A method determines a force to be transmitted to driving wheels of a vehicle provided with a hybrid power train with several gear ratios and a traction battery. The method includes determining, over all of a speed range that the vehicle is capable of achieving, a maximum force that the power train is theoretically capable of transmitting to the wheels in predetermined nominal conditions of charge of the traction battery and/or of outside temperature and/or of atmospheric pressure; and determining, over all of the speed range, a drivability force that the power train is capable of transmitting to the wheels. The drivability force confirms that whatever the value of the speed of the vehicle, the drivability force is less than or equal to the maximum force; and the drivability force evolves within the speed range without exhibiting an inflexion point at values of the speed requiring a gear change.

Abstract: An apparatus and method for controlling a transmission of a vehicle, may include a determination device that determines whether a curve is present within a predetermined distance ahead of the vehicle, based on information regarding a road ahead of the vehicle, a calculation device that determines lateral acceleration of the vehicle based on information regarding the curve and information regarding a state of the vehicle and determines a pattern correction coefficient based on the predicted lateral acceleration, a pattern correction device that corrects a preset gear-shift pattern based on the pattern correction coefficient, and a controller that is configured to control the transmission based on the corrected gear-shift pattern when the vehicle enters the curve.

Abstract: A gateway causes an ECU to set an ID according to the number of loads connected to the ECU. The ECU transmits, to the gateway, a set ID which is according to the loads. If IDs transmitted from a plurality of ECUs are overlapped, the gateway causes the ECU to set an ID according to the number of parallel connections of the loads. The ECU transmits, to the gateway, a set ID which is according to the number of parallel connections. If IDs transmitted from a plurality of ECUs are overlapped, the gateway causes the ECU to set an ID according to a sum of drive currents of the loads.

Abstract: A method for preventing an unauthorized operation of a vehicle, and an electronic hardware security module for implementing the method are provided. A vehicle immobilizer software is used therein, which is at least partially stored in the electronic hardware security module.

Abstract: A control unit arrangement for controlling a fluid arrangement includes at least one transmission actuator element, at least one valve and at least one pump, for clutch and transmission activation. The control unit arrangement also includes a plurality of control units. At least one control unit of the plurality of control units is configured to actuate the at least one transmission actuator element and at least one control unit of the plurality of control units is configured to actuate the at least one pump. One of the control units from the plurality of control units is configured to actuate the at least one valve, or at least two of the control units from the plurality of control units are connected via an OR logic for a common actuation of the at least one valve.

Abstract: A motor vehicle includes an engine having, in an exhaust system thereof, a particulate matter removal filter that removes particulate matters, a shift device capable of performing a sequential shift operation, and an electronic control unit that controls the engine such that the motor vehicle runs in accordance with a driver's operation. The electronic control unit is configured to perform control in such a manner as to cause the vehicle to run without carrying out a shift even when the sequential shift operation is performed by the driver, if a deposition amount of particulate matters deposited in the particulate matter removal filter is equal to or larger than a predetermined amount. Thus, the particulate matter removal filter can be restrained from being overheated through the supply of a large amount of air to the particulate matter removal filter with the predetermined amount or more of particulate matters deposited therein.

Abstract: A method for providing at least one specific vehicle state of a vehicle. The method includes acquiring basic parameters of the vehicle from at least one data source; comparing the acquired basic parameters with a comparison list; and providing a specific vehicle state for the acquired basic parameters based on the comparison.

Abstract: A road information acquisition unit (12a) acquires information about the road in a prescribed segment in front, a vehicle information acquisition unit (12b) acquires information about the vehicle (1), a velocity prediction unit (12c) predicts, on the basis of the road information and the information about the vehicle (1), the changes in the vehicle velocity that would be brought about in the prescribed segment in the case of travelling the prescribed segment in a first gear, and a shift control unit (12d) which maintains the first gear if the condition is satisfied that the predicted vehicle velocity exhibits a minimum value other than at the ends of the prescribed segment and the minimum value is greater than the delay speed, which is set to a value less than a predetermined velocity set as the velocity that would result from downshifting.

Abstract: A controller constituting at least a portion of a control system includes a master control unit, and one or more slave control units connected to the master control unit with at least a communication line. The slave control units each include a timer that is synchronized with the master control unit, an input unit that receives an interrupt signal, a notification unit that obtains, upon receipt of the interrupt signal through the input unit, timing information from the timer and transmits notification about an input of the interrupt signal to the master control unit, and a transmission unit that transmits, upon receipt of a request from the master control unit via the communication line, the timing information to the master control unit via the communication line.

Abstract: To provide a device to facilitate protection of a clutch while minimizing degradation of the torque transmission performance. A hydraulic clutch for drive power distribution is provided between a drive power source and auxiliary driving wheels, and a commanded torque is determined depending on the travel situation. The hydraulic pressure corresponding to the commanded torque is supplied to the hydraulic clutch. The surface temperature of the clutch is estimated (detected). The device generates a limiting value to limit the commanded torque when the difference in rotation between input and output shafts of the clutch is not less than a predetermined threshold and the commanded torque is not less than a predetermined value and performs control so as to increase the limiting value with an increase in the surface temperature of the clutch.

Abstract: A system and method for releasing baulking of a transmission gear of a hybrid vehicle are provided. The method includes comparing a stroke of a gear actuator with a first target value while increasing the stroke of the gear actuator when gear shifting is requested. Additionally, the method includes detecting whether the vehicle is in a stop state, in response to determining that the stroke of the gear actuator is less than a first target value. A motor torque is then increased in response to determining that the vehicle is in a stop state and the stroke of the clutch actuator is increased to be a second target value.

Abstract: To provide drive torque control capable of avoiding acceleration failure even when a wheelie occurs. A drive torque control method for a vehicle detects or computes a wheelie amount of the vehicle, reduces drive torque that is applied to a rear wheel to be lower than the drive torque in a normal state when the wheelie occurs, and maintains or increases the drive torque when the wheelie amount is reduced.

Abstract: Embodiments of the present invention provide a system comprising: a first controller configured in each of a predetermined plurality of states to generate a torque request signal in order to cause a vehicle to operate in accordance with a target speed value, the system being configured, when the first controller is one of said plurality of states to generate a gear shift limit signal to cause a change in an engine speed at which a transmission controller is permitted to cause a gear downshift, the gear shift limit signal being generated in dependence on at least one traction indicator signal indicative of an amount of estimated traction between the vehicle and a driving surface.

Abstract: A method for controlling an automatic transmission of a vehicle during cornering includes controlling opening of the transmission in response to movement of a control interface, the position data of which are transmitted to a calculation unit of the transmission by a communication network of the vehicle, based on a comparison of a measured or predicted transverse acceleration value of the vehicle with a transverse acceleration threshold calibrated as a radius of curvature of encountered or identified corners and speed and longitudinal acceleration of the vehicle on the corners.

Abstract: A system and method for controlling a vehicle include a manual transmission operated by a controller in communication with shift actuators and programmed to, in response to each controller reset less than a threshold number of resets, control each shift actuator that was not moving at the time of the reset based on respective shift actuator positions stored prior to the reset, and to control the shift actuators to limit available gear ratios in response to the reset exceeding the threshold number of resets.

Abstract: The present disclosure relates to a shifting apparatus for a vehicle which includes a transmission realizing series of multi shift stages so that shift stages are sequentially increased as shift ratios are decreased. The shifting apparatus may include a shift limit means designating a lowest shift stage having a largest shift ratio to a shift stage for climbing and limiting so that a driver may select the shift stage for climbing in an only case that the vehicle satisfies a predetermined climbing condition; a gradient angle sensor for measuring a climb gradient of the vehicle; a vehicle speed sensor for measuring a vehicle speed; and a controller determining the climbing condition based on signals of the gradient angle sensor and the vehicle speed sensor so as to control the shift limit means.

Abstract: A system including a current module, a second module, and a temperature module. The current module is configured to determine an amount of current drawn from a power source by a hydraulic pump of a transmission based on a current signal received from a current sensor. The current signal is indicative of the current drawn by the hydraulic pump. The second module is configured to determine (i) a speed of the hydraulic pump based on a speed signal received from a speed sensor, or (ii) an output torque of the hydraulic pump based on the amount of current drawn by the hydraulic pump. The speed signal is indicative of the speed of the hydraulic pump. The temperature module is configured to estimate a temperature of a hydraulic fluid circulated by the hydraulic pump based on (i) the amount of current drawn by the hydraulic pump, and (ii) the speed or the output torque of the hydraulic pump. The second module is configured to adjust the speed of the hydraulic pump based on the temperature of the hydraulic fluid.

Abstract: A control apparatus for an automatic transmission includes an ECU. The ECU stores a N?1 speed downshift/a N?2 speed downshift/a N?1 speed upshift/and a hysteresis lines. The hysteresis line is a predetermined distance above the N?1 speed upshift line, and is below the N?2 speed downshift line. The ECU controls the speed of the automatic transmission based on a quantity of state of a vehicle, and the plurality of stored shift lines, and execute, when an N speed is established, a first downshift that changes a speed from the N speed to an N?2 speed, when the quantity of state of the vehicle is in a region above the hysteresis line, after the quantity of state of the vehicle has risen above the N?1 speed downshift line.

Abstract: A system for combusting volatile vapors includes a carburetor having intake valves for receiving base fuel from a fuel source, ambient combustion air, and volatile vapors from a vapor source. A plurality of sensors measure and generate sensor data based on a respective plurality of physical properties associated with the carburetor and associate combustion engine operation. One or more programmable controllers receive the sensor data and control the intake valves to regulate respective ratios of the fuel, air, volatile vapors drawn through the carburetor based on the received sensor data. To increase the burn of volatile vapors, an engine loading system automatically operated by the controller(s) applies an automatically adjustable braking load on the engine. The load level applied is based on the sensor data and commensurate with maintaining stable engine running conditions. The loading system decreases time necessary to remediate a site.

Abstract: A method of controlling shifts based on a relative speed between a host vehicle and a preceding vehicle includes calculating the relative speed between the host vehicle and the preceding vehicle based on a speed of the host vehicle and an inter-vehicle distance between the host vehicle and the preceding vehicle, determining whether a change condition of a shift line before stopping is satisfied, changing the shift line before stopping if the change condition of the shift line before stopping is satisfied, and performing the shift using the shift line before stopping based on a position of an accelerator pedal and the speed of the host vehicle.

Abstract: Even if an adjustable speed limitation function (ASL) sets a vehicle speed upper limit to a relatively low vehicle speed, a control unit 10 is configured to, in order to suppress the problem of a decrease in fuel efficiency while the ASL is executing the vehicle speed limitation, suppress an output of an engine 2 so that the vehicle speed does not exceed the vehicle speed upper limit, and cause a gear stage of an automatic transmission 3 to be shifted up to a higher speed side gear stage having higher fuel efficiency than a gear stage that is set based on the driving state of a vehicle 1, when a deviation between the vehicle speed detected by a vehicle speed sensor 21 and the vehicle speed upper limit that is set by a vehicle speed upper limit setting switch 24 becomes less than a predetermined threshold.

Abstract: A method of detecting a failure of a hydraulic pump includes sensing a rotational speed of the engine, and a rotational speed of a rotating drivetrain component. A numerical difference between the rotational speed of the engine and the rotational speed of the rotating drivetrain component is calculated. The numerical difference is compared to a threshold value to determine if the numerical difference is less than the threshold value, or is equal to or greater than the threshold value. A failure of the hydraulic pump is identified when the numerical difference between the rotational speed of the engine and the rotational speed of the rotating drivetrain component is equal to or greater than the threshold value, and the transmission is positioned in the neutral gear mode. When a failure of the hydraulic pump is identified, the operation of the engine is stopped.

Abstract: A vehicle control device includes an input unit configured to receive plural requests for a physical amount to be controlled in a vehicle; a judgment unit configured to judge whether or not a degree of priority of each of the received requests is high: a second mediation unit configured to, when there are plural requests whose degrees of priority are judged not to be high, mediate these plural requests to determine a control target value (Rm); a transfer unit configured to, when there is a request whose degree of priority is judged to be high, transfer this request as the control target value; and an output unit configured to output the control target value transferred from the transfer unit or determined by the second mediation unit to a VDC.

Abstract: A method and apparatus for modifying the shift map of an automatically controlled vehicle transmission having individually selectable speed ratios. A calibrator determines launch ratio from a plurality of speed ratios and is responsive to ambient pressure and/or ambient temperature. The calibrator may be further responsive to engine speed, engine temperature, transmission temperature, gradient and direction of gradient.

Abstract: A vehicle system includes a computer in a vehicle, and the computer includes a processor and a memory. The computer is configured to determine an operational state of a vehicle, calculate a road grade value from data from a first sensor, calculate an effective road grade value from a torque demand value, update modeling variables to map the road grade value substantially to the effective grade value when the operation state is determined to be a steady-state condition, and calculate a road grade characteristic with the road grade value and the modeling variables.

Abstract: A system for determining optimized shift locations of a transmission of a machine as the machine moves along a work surface includes a position sensor, a transmission having a low gear and a high gear, and a controller including a machine controller. The controller is configured to determine the position of the work surface, store a shift threshold, and control shifting between the low gear and the high gear based upon the position of the work surface and the shift threshold. The machine controller is configured to control shifting between the low gear and the high gear based upon operating parameters of the machine.

Abstract: A curve length, a curve size, and a curve heading angle change of a roadway being traveled by a vehicle are determined. Each of the curve length, the curve size, and the curve heading angle are compared with one or more threshold values to obtain a driving mode request.

Abstract: A drive control device for a hybrid vehicle is provided with: a first differential mechanism having a first rotary element connected to a first electric motor, a second rotary element connected to an engine, and a third rotary element connected to an output rotary member; a second differential mechanism having a first rotary element connected to a second electric motor, a second rotary element, and a third rotary element, one of the second rotary element and the third rotary element being connected to the third rotary element of said first differential mechanism; a clutch configured to selectively couple the second rotary element of said first differential mechanism, and the other of the second and third rotary elements of said second differential mechanism which is not connected to the third rotary element of said first differential mechanism, to each other; and a brake configured to selectively couple said other of the second and third rotary elements of said second differential mechanism which is not conne

Abstract: Three dimensional GPS or vehicle position data is used to determine a slope the vehicle is traveling over at a specific point in time. The slope data can then be combined with other metrics to provide an accurate, slope corrected vehicle mass. The vehicle mass can then be used along with other vehicle data to determine an amount of work performed by a vehicle, enabling s detailed efficiency analysis of the vehicle to be performed. To calculate slope, horizontal ground speed (VHGS) can be calculated using the Pythagorean Theorem. One can take the Z/Up magnitude and divide it by the horizontal ground speed. Replacing Z, x and y with directional vectors enables one to calculate slope. The slope data is then used to determine the mass of the vehicle at that time. Pervious techniques to calculate mass did not factor in slope, and thus are not accurate.

Abstract: In an engine system of a machine having a multi fuel engine system, the occurrence of transient events such as gear shifts, grade changes and machine speed changes may be anticipated, and a fuel substitution strategy may be adjusted if necessary to optimize performance during the transient events. Transient events at a worksite may be anticipated and mapped by evaluating shift control logic strategies and worksite maps with truck route, speed and topographical information and determining where the fuel substitution strategy cannot meet the power requirements for the transient event. When it is determined that the machine is approaching an anticipated transient event, an appropriate fuel substitution adjustment can be executed to ensure the engine has sufficient power for the transient event.

Abstract: Systems and methods for controlling transmissions and associated vehicles, machines, equipment, etc., are disclosed. In one case, a transmission control system includes a control unit configured to use a sensed vehicle speed and a commanded, target constant input speed to maintain an input speed substantially constant. The system includes one or more maps that associate a speed ratio of a transmission with a vehicle speed. In one embodiment, one such map associates an encoder position with a vehicle speed. Regarding a specific application, an automatic bicycle transmission shifting system is contemplated. An exemplary automatic bicycle includes a control unit, a shift actuator, various sensors, and a user interface. The control unit is configured to cooperate with a logic module and an actuator controller to control the cadence of a rider.

Abstract: An apparatus and a method for determining a short-term driving tendency of a driver may include a data detector configured to detect an acceleration of a vehicle, a vehicle speed, and an inter-vehicle distance, and a controller configured to calculate a relative speed with respect to a forward vehicle from the vehicle speed and the inter-vehicle distance, extract fuzzy result values for the vehicle speed and the inter-vehicle distance, respectively, by setting a membership function that corresponds to each of the acceleration of the vehicle and the relative speed with respect to the forward vehicle, and determine the short-term driving tendency of the driver using the fuzzy result values.

Abstract: Various embodiments of methods, apparatus and systems that diagnose and/or detect faults of an electro-hydraulic control system for a transmission are presented. Some embodiments, adjust a main line pressure of the electro-hydraulic control system and detect faults based upon changes in a pressure switch resulting from such adjustments of the main line pressure. The pressure switch may be incorporated into a control main valve or a clutch trim valve of the electro-hydraulic control system.

Abstract: A method for operating an engine of a vehicle. During a warm-up period following a cold start of the vehicle, a cylinder of the engine is charged to a reduced air-charge pressure, and fuel is injected into the cylinder. After the warm-up period, the cylinder is charged to a non-reduced air-charge pressure, greater for an equivalent driver demand than the reduced air-charge pressure, and fuel is injected into the cylinder.

Abstract: A system and a method for operating an engine of a vehicle are provided wherein a transmission coupled to the engine has a freewheeling mode. The engine is switched off by setting the transmission into the freewheeling mode and interrupting fuel supply to the engine in the freewheeling mode depending on one or more operating conditions of the vehicle. A gear in the transmission is selected proactively depending on one or more operating actions of the vehicle anticipated to be required on or within a predefined time limit after restart of the engine.

Abstract: A method for controlling a shift of an automatic transmission in a vehicle may include calculating a first long-term driving style index by using running information in the running mode, calculating a second long-term driving style index by using running information in the sports mode, when the vehicle is switched from the running mode to the sports mode, temporarily storing the first long-term driving style index at the switching point, and when the sports mode is switched to the running mode, if the second long-term driving style index is greater than the temporarily stored first long-term driving style index, updating the second long-term driving style index as a final long-term driving style index, and determining a driving style.

Abstract: A method of controlling a vehicle having a transmission system, an engine system, and a braking system includes detecting a braking condition of the braking system. The braking condition is at least one of a brake temperature being above a predetermined brake temperature limit and a braking load being above a predetermined braking load limit. The method also includes detecting a second condition of at least one of the transmission system and the engine system. The method also includes determining whether the second condition satisfies predetermined criteria. Furthermore, the method includes detecting an absolute vehicle acceleration that is below a predetermined acceleration limit. Moreover, the method includes downshifting from a current gear to a lower gear to thereby cause engine braking when the braking condition is satisfied, the second condition satisfies the predetermined criteria, and the absolute vehicle acceleration is below the predetermined acceleration limit.

Abstract: A method for controlling a transmission of a powertrain system includes executing a single source shortest path search to identify a preferred shift path originating with an initial powertrain state and terminating at a target powertrain state, wherein the single source shortest path search employs transition-specific costs and situational costs to identify the preferred shift path. The preferred shift path is executed to achieve the target powertrain state.

Abstract: Methods and systems are provided for performing a multiple gear downshift of a transmission gear by transiently operating in an intermediate gear. In response to ambient humidity and a condensate level in a charge air cooler, the transmission gear may be downshifted from a higher gear to an intermediate gear, and then to a requested lower gear. Downshifting through an intermediate gear may also be controlled based on the gear shift request.