System and method for determining and controlling engine speeds during gear shifting

A method for determining and controlling engine speeds of a work vehicle during gear shifts, the method comprising:

• controlling, with a computing device, an operation of at least one of an engine or a transmission of a work vehicle so as to maintain the work vehicle operating at a requested speed;
• determining, with the computing device, a measured gear ratio for the transmission as a gear shift is occurring from a first gear ratio to a second gear ratio to maintain the work vehicle at the requested speed wherein the measured gear ratio is determined as a function of an instantaneous input speed of the transmission and of an instantaneous output speed of the transmission as the gear shift is occurring;
• calculating, with the computing device, a desired engine speed for the engine during the gear shift as a function of the requested speed and a time-lagged gear ratio for the transmission, the time-lagged gear ratio at a given time during the gear shift corresponding to the measured gear ratio determined prior to the given time by a given delay period;
• and
• controlling, with the computing device, an engine speed of the engine based on the desired engine speed as the transmission is shifted from the first gear ratio to the second gear ratio.

A system for determining and controlling engine speeds of a work vehicle during gear shifts, the system comprising:

• an engine;
• a transmission coupled to the engine;
• a controller communicatively coupled to at least one of the engine or the transmission, the controller including a processor and related memory, the memory storing instructions that, when implemented by the processor, configure the controller to:
• control an operation of at least one of the engine or the transmission so as to maintain the work vehicle operating at a requested speed;
• determine a measured gear ratio for the transmission as a gear shift is occurring from a first gear ratio to a second gear ratio to maintain the work vehicle at the requested speed, wherein the measured gear ratio is determined as a function of an instantaneous input speed of the transmission and of an instantaneous output speed of the transmission as the gear shift is occurring;
• calculate a desired engine speed for the engine during the gear shift as a function of the requested speed and one of the measured gear ratio or the second gear ratio;
• and
• when the measured gear ratio differs from the first gear ratio by a predetermined threshold amount, control an engine speed of the engine based on the desired engine speed for a remainder of the gear shift from the first gear ratio to the second gear ratio.