US 9,810,164 B2
Prime mover control device for work vehicle
Isamu Aoki, Tsukuba (JP); Koji Hyodo, Kasumigaura (JP); Tetsuji Tanaka, Abiko (JP); and Kentaro Oomae, Ushiku (JP)
Assigned to KCM Corporation, Hyogo (JP)
Appl. No. 14/914,372
Filed by KCM Corporation, Hyogo (JP)
PCT Filed Jan. 28, 2015, PCT No. PCT/JP2015/052302
§ 371(c)(1), (2) Date Feb. 25, 2016,
PCT Pub. No. WO2015/115456, PCT Pub. Date Aug. 6, 2015.
Claims priority of application No. 2014-015387 (JP), filed on Jan. 30, 2014.
Prior Publication US 2016/0201582 A1, Jul. 14, 2016
Int. Cl. F02D 41/12 (2006.01); F02D 31/00 (2006.01); F02D 29/02 (2006.01); F02D 41/02 (2006.01); F02D 29/04 (2006.01)
CPC F02D 31/009 (2013.01) [F02D 29/02 (2013.01); F02D 41/0205 (2013.01); F02D 29/04 (2013.01); F02D 2200/023 (2013.01); F02D 2200/101 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A prime mover control device for a work vehicle, comprising:
a controller that controls a rotation speed of a prime mover in correspondence to an operation quantity at an accelerator operation member;
an oil temperature sensor that detects a temperature of cooling oil used to cool a brake; and
a vehicle speed sensor that detects a vehicle speed;
wherein the controller is programmed to limit a maximum rotation speed of the prime mover when the temperature of the cooling oil detected by the oil temperature sensor is higher than a predetermined temperature, compared to when the temperature of the cooling oil detected by the oil temperature sensor is lower than the predetermined temperature, and
wherein the controller is programmed not to limit the maximum rotation speed of the prime mover even when the temperature of the cooling oil detected by the oil temperature sensor is higher than the predetermined temperature if the vehicle speed detected by the vehicle speed sensor is lower than a predetermined vehicle speed.