| 摘要 |
PURPOSE:To optimize motor aided drive by generating in a motor a forward driving force for aiding advance by an engine or always inhibiting the forward driving force generating the forward driving force within a predetermined conditional region and inhibiting the generating of the same in the region other than the predetermined one according to the selected condition. CONSTITUTION:The drive force of an engine 2 is transmitted through a manual transmission 4, differential gear 5, left and right drive shafts 6L, 6R to left and right front wheels 1FL, 1FR, and left and right rear wheels 1RL, 1RR are driven by hydraulic motors ML, MR. Here by selecting manually one of various driving modes by the hydraulic motors ML, MR, oil pressure from pump P to hydraulic motors ML, MR and a clutch 12 for turning on and off those motors is changed over by changeover valves VVA-VVI. Thus, a forward driving force in the same direction as the advance by the engine 2 is generated or inhibited by the hydraulic motors ML, MR and the generation and inhibition are carried out depending upon the condition. Thus, the driving region of an auxiliary driving wheel determined by the hydraulic motor ML, MR can be optimized. |
