| 摘要 |
PURPOSE:To operate an accelerator according to load and prevent an engine from stalling, by installing a hydraulic cylinder in a hydraulic system of the engine for driving a hydraulic pump of a hydraulic driving device, while connecting a piston inside the cylinder to an accelerator lever. CONSTITUTION:A positive pressure chamber 4 of a hydraulic cylinder 1 is interconnected to a hydraulic main circuit 18 being interconnected to a hydraulic driving device via a relief valve 19. A rod 6 is attached solidly to a piston 2 carrying a small hole 3 installed inside the hydraulic cylinder 1, while a pin 9 of an accelerator lever 7 is engaged in a long hole 8 installed in a tip end of the rod 6. With this constitution, when pressure in the hydraulic main circuit 18 goes up as load grows large, pressure inside the positive pressure chamber 4 of the hydraulic cylinder 1 also rises, causing the piston 2 to be moved toward the right, thus the accelerator lever 7 is driven to the side of a full throttle position (b). Therefore, engine output is increased and stalling of an engine is prevented. |
