| 摘要 |
1,256,574. Regulating I. C. engines. BORG-WARNER CORP. Aug. 22, 1969 [Oct. 1 1968], No.42050/69. Heading F1B. [Also in Divisions G2-3] In a supplementary fuel supply system for a diesel engine, liquified petroleum gas from source 37 is admitted to the air intake conduit 21 when the engine load reaches a certain level. As shown chambers 53, 55 on opposite sides of diaphragm 51 are inter-connected by bleed orifice 57 so as normally to equalize pressures in the chambers at the depressed value existing in conduit 21 terminating in nozzle 65 in conduit 21. Upon engine load reaching a certain level, valve 33 opens to admit to chamber 55 the total pressure in conduit 21 as sensed via line 69. Diaphragm 51 thereby moves as function of air flow velocity to open valve 61 to allow gas to flow to conduit 63. Valve 33 can be opened in response to exhaust temperature as sensed by a thermal bulb or, as shown, a thermal electric switch. A primary gas regulator 39 and on-off valve 41 are provided. |
