| 摘要 |
<p>The engine (1) drives a pump (2) feeding an accumulator (3), joined by pipe (4) to a forward/reverse selector (5) for feed pipes (6), (7) to four accesses to the distributor. The feed pipes are bifurcated and the distributor (8) contains a piston (9). This has grooves (10), (11) and a stop (12) and slides under the control of a motor/brake pedal. The distributor also connects with two pipes (14), (15) to a geared motor (16) which can also act as a pump. It drives a wheel (18) in either direction or the wheel can turn it for braking. Intermittently operated hydraulically controlled valve (22, 23) on pipes (19, 20) joining an atmospheric pressure reservoir (21) carry actuating lines from two secondary accesses (141, 151).</p> |
