| 摘要 |
<p>1381674 Fluid pressure servosystems BENDIX CORP 21 Feb 1972 [24 March 1971] 7916/72 Heading G3P A moment-balance control mechanism regulating, e.g. the speed of an I.C. engine, includes a governor 68 which applies a force to a lever 54 subjected to an adjustable bias from temperaturecompensated spring 94 via lever 98, roller 104 on lever 110 and rollers 80 on a lever 84 having a further, grooved roller 86 engaging track 90. Lever 54 controls leak-off from the full-area side of differential piston 26 which positions lever 84 to maintain a balance at lever 54, the position of the piston being a linear function of engine speed when x = 1 1 . In a modification, a further lever (126) is interposed between lever 98 and roller 104 and the spring force is applied to this further lever through a roller shiftable longitudinally in response to an engine operating temperature or pressure. The mechanism of Fig. 1, might alternatively function as a flowmeter if the governor is replaced by a bellows responsive to the pressure drop across a restrictor. In a further modification, lever 54 receives the force of spring 148 via lever 146 and a roller 144 adjusted by piston 26 which in this case assumes a position which is a function of the square of a signal applied to lever 142 which shifts lever 84 longitudinally. In this case, piston 26 and parts 144-152 may be replaced by a member which responds to the pressure in line 46 and applies a feedback force to lever 54.</p> |
