A hydrostatic transmission pedal stroke limiter includes a stop connected through a linkage to a range shift lever for limiting the travel of the hydrostatic transmission actuator arm when the range shift lever is in the low gear range, and reducing sound significantly when operating in the low gear range.

A vehicle control system for an agriculture vehicle. The vehicle control system includes a processing circuit including a processor and memory, the memory having instructions stored thereon that, when executed by the processor, cause the processing circuit to receive an engine speed of the agricultural vehicle, determine a difference between the engine speed and a desired engine speed, determine whether the difference is larger than an engine speed threshold, and control, responsive to the difference being larger than the engine speed threshold, the agricultural vehicle to shift to neutral.

A shifting control method for controlling a speed change of a vehicle in a downhill section may include collecting, by a forward road grade information collection device, information on a downhill grade which is present ahead of a vehicle, before a vehicle enters a downhill section, determining, by a driving information detection device, whether a predetermined inertial driving condition is satisfied, before the vehicle enters the downhill section, and deciding, by a control device, a shifting mode of the vehicle depending on the downhill grade, and controlling a transmission according to the decided shifting mode, at a predetermined time before the vehicle enters the downhill section.

Methods and systems for improving vacuum generation for an engine that may be operated at higher altitudes are presented. In one non-limiting example, a transmission that is mechanically coupled to the engine may be shifted from a gear to neutral in response to an actual total number of times a vehicle brake pedal is applied and partially released while the vehicle is stopped and the brake pedal is applied.

A method for controlling internal electronic range selection for an automatic transmission includes: confirming if a range change command has been ordered from a current transmission operating state; verifying expected performance from at least first and second mode valves and a park servo are present in the current transmission operating state prior to allowing a range change event; during the range change event: generating proactive commands including ordering a reduction in a hydraulic system pressure; and identifying if an unexpected event is detected; and following completion of the range change event confirming expected performance is obtained from at least the first and second mode valves and the park servo to achieve a driver intended state.

A method for controlling internal electronic range selection for an automatic transmission includes: confirming if a range change command has been ordered from a current transmission operating state; verifying expected performance from at least first and second mode valves and a park servo are present in the current transmission operating state prior to allowing a range change event; during the range change event: generating proactive commands including ordering a reduction in a hydraulic system pressure; and identifying if an unexpected event is detected; and following completion of the range change event confirming expected performance is obtained from at least the first and second mode valves and the park servo to achieve a driver intended state.

A shifting control method for controlling a speed change of a vehicle in a downhill section may include collecting, by a forward road grade information collection device, information on a downhill grade which is present ahead of a vehicle, before a vehicle enters a downhill section, determining, by a driving information detection device, whether a predetermined inertial driving condition is satisfied, before the vehicle enters the downhill section, and deciding, by a control device, a shifting mode of the vehicle depending on the downhill grade, and controlling a transmission according to the decided shifting mode, at a predetermined time before the vehicle enters the downhill section.

A hydrostatic transmission pedal stroke limiter includes a stop connected through a linkage to a range shift lever for limiting the travel of the hydrostatic transmission actuator arm when the range shift lever is in the low gear range, and reducing sound significantly when operating in the low gear range.

A method for controlling internal electronic range selection for an automatic transmission includes: confirming if a range change command has been ordered from a current transmission operating state; verifying expected performance from at least first and second mode valves and a park servo are present in the current transmission operating state prior to allowing a range change event; during the range change event: generating proactive commands including ordering a reduction in a hydraulic system pressure; and identifying if an unexpected event is detected; and following completion of the range change event confirming expected performance is obtained from at least the first and second mode valves and the park servo to achieve a driver intended state.

A method for controlling internal electronic range selection for an automatic transmission includes: confirming if a range change command has been ordered from a current transmission operating state; verifying expected performance from at least first and second mode valves and a park servo are present in the current transmission operating state prior to allowing a range change event; during the range change event: generating proactive commands including ordering a reduction in a hydraulic system pressure; and identifying if an unexpected event is detected; and following completion of the range change event confirming expected performance is obtained from at least the first and second mode valves and the park servo to achieve a driver intended state.