| 摘要 |
<p>1534460 Pressure regulators ROBERT BOSCH GmbH 27 Oct 1977 [28 Oct 1976] 44676/77 Heading G3P [Also in Division F2] A valve comprises two chambers 7, 8 separated by a flexible diaphragm 5 formed with a pocket 56 in which is loosely located a plate 55 which co-operates with a valve seat 9 and is centred with respect to the seat by a spring 11 coaxial with the seat. The spring locates either in an annular groove 57 or on a shoulder (not shown) on the plate. In the closed position the plate 55 abuts a sharp ring 60 formed on the valve housing and concentric with the seat 9. The valve is used in a fuel injection system, and the diaphragm 5 is formed with a plurality of pockets for closure plates for the respective valves. A spool valve 21 positioned in accordance with engine parameters controls the flow of fuel from the inter-connected chambers 8 of the valves to the respective chambers 7, and the diaphragm responds to the pressure difference between these chambers to regulate the flow from the chambers 7 to the respective injection valves 31.</p> |
