| 摘要 |
A hill start assist system for a tractor includes a pressure reduction valve receiving air from an air supply source, a solenoid valve having a supply port connected to a delivery port of the pressure reduction valve, a double check valve receiving air from a foot brake valve and from the solenoid valve, a tractor protection valve receiving air from the solenoid valve and from front and rear brake circuits of the tractor and an inversion valve having a control line connected to the solenoid, a supply port connected to the delivery line of the tractor protection valve, an exhaust port connected to the foot brake valve and a delivery line connected to a stop light switch. |
