摘要:
Die Erfindung betrifft eine Kraftstofführung im Zylindergehäuse (1) einer Brennkraftmaschine (2) mit in Reihe angeordneten Zylindern (3), mit im Zylindergehäuse (1) vorgesehenen Aufnahmebohrungen (4) für Steckpumpen (5), ferner mit einem im Zylindergehäuse (1) neben den Steckpumpen (5) verlaufenden durchgehenden Längskanal (25) als Kraftstoffvorlauf sowie mit einem von dem Längskanal (25) in Höhe der Steckpumpe (5) wegführenden Zuführkanal (4), der mit einer in der Steckpumpe (5) verlaufenden Kraftstoffleitung (22) verbunden ist, wobei in der Kraftstoffleitung (22), welche in einem aus der Aufnahmebohrung (4) herausragenden, freiliegenden Pumpengehäuseteil der Steckpumpe verläuft, eine zu einem Teil in dem Zuführkanal (4) des Zylindergehäuses (1) steckende (26) Hülse eingesetzt ist.
摘要:
A variable-discharge high pressure pump (10) for pressure-feeding fuel to a common rail (6) for use in a diesel engine (1). The pump has a plunger (18), a plunger chamber (19), a cam (17) for reciprocatively moving the plunger; an opening-out type electromagnetic valve (15) capable of opening and closing one end of the plunger chamber, a fuel reservoir (22), a check valve (23) communicating with the plunger chamber, and an inlet pipe (14) for supplying fuel to the fuel reservoir. Both the introduction of the fuel into the plunger chamber and the return of the fuel from the plunger chamber to the fuel reservoir are effected through the electromagnetic valve.
摘要:
An electromagnetic pilot valve to control the flow of a fluid line, especially for fuel injection pumps, has a valve member (22) on a valve needle (21) which co-operates with a valve seat (23). The valve needle (21) is connected to an armature (29) of an electromagnet (25), where the armature (29) runs in air and is sealed against the fluid-conveying region of the valve in order to achieve high switching speeds. To damp as far as possible the recoil vibration occuring when the valve closes and which could cause it to open again, the connection between the armature (29) and the valve needle (21) takes the form of an elastic coupling (expanding rod 38) so arranged that, after the impact of the valve member (22) on the valve seat (23) on the closure of the valve, the armature (29) and the valve needle (21) vibrate in counter-phase.
摘要:
A variable-discharge high pressure pump (10) for pressure-feeding fuel to a common rail (6) for use in a diesel engine (1). The pump has a plunger (18), a plunger chamber (19), a cam (17) for reciprocatively moving the plunger; an opening-out type electromagnetic valve (15) capable of opening and closing one end of the plunger chamber, a fuel reservoir (22), a check valve (23) communicating with the plunger chamber, and an inlet pipe (14) for supplying fuel to the fuel reservoir. Both the introduction of the fuel into the plunger chamber and the return of the fuel from the plunger chamber to the fuel reservoir are effected through the electromagnetic valve.
摘要:
A variable-discharge high pressure pump (10) for pressure-feeding fuel to a common rail (6) for use in a diesel engine (1). The pump has a plunger (18), a plunger chamber (19), a cam (17) for reciprocatively moving the plunger; an opening-out type electromagnetic valve (15) capable of opening and closing one end of the plunger chamber, a fuel reservoir (22), a check valve (23) communicating with the plunger chamber, and an inlet pipe (14) for supplying fuel to the fuel reservoir. Both the introduction of the fuel into the plunger chamber and the return of the fuel from the plunger chamber to the fuel reservoir are effected through the electromagnetic valve.
摘要:
ßei einem elektrisch betätigbaren Kraftstoffeinspritzventil für Brennkraftmaschinen weist ein mit Elektroden versehener piezoelektrischer Schwinger (Radialschwinger 11) wenigstens eine Kraftstoff aufnehmende Kammer (12) auf. Die Kammer (12) steht mit einem Kraftstoffzuleitungsweg (Konstantvolumen-Kammer 20) und einer Ausspritzöffnung (Bohrung 17) in Verbindung. Der Schwinger (11) ist in einem Block (18) montiert, aus dem auch der Kraftstoffzuleitungsweg (Konstantvolumenkammer 20) ausgeformt ist. Weiterhin ist in dem Block 18, der aus Metall besteht, ein Hochspannungserzeuger (35) nach außen elektrisch abgeschirmt untergebracht. Der Hockspannungserzeuger ist über innerhalb des Blocks (18) geführte Zuleitungen (14, 15) mit den Elektroden des piezoelektrischen Schwingers (11) verbunden.
摘要:
[Problem] There are provided a diesel engine, a diesel engine manufacturing method, and a diesel engine injection-amount correction system which can easily improve accuracy of correction of variations in fuel injection amount. [Solution] A diesel engine 30 includes an injector 4 that uses a solenoid to directly drive a needle valve and inject a fuel and an injector control device 2 that controls the driving by the injector 4. The injector control device 2 includes a charge voltage control circuit 22, a storage unit 25 that stores a correction value related to an injection amount of the fuel injected from the injector 4, and an injector control circuit 24 that controls the driving by the injector 4 on the basis of each of a voltage supplied from the charge voltage control circuit 22 and the correction value stored in the storage unit 25. The correction value is set according to a voltage applied to a terminal of the injector control device 2 connected to a load when a current starts to flow in the load connected to the injector control device 2.
摘要:
Because the relationship of the fuel injection quantity to a designated injection period differs in a half-lift region and a full-lift region, the purpose of the present invention is to bring the flow rate characteristics of an intermediate-lift region close to the flow rate characteristics of the full-lift region and improve the controllability of small fuel injection quantities. Provided are a peak current supply period in which a valve body of a fuel injection valve causes the magnetic force necessary for a valve-opening action to be generated, and a lift quantity adjustment period in which, after the peak current supply period, a current lower than the peak current is passed for a prescribed period; further provided is a current interrupt period in which a drive current is rapidly lowered before the lift quantity adjustment period.
摘要:
The present invention provides a fuel gas supply system of a gas engine, the fuel gas supply system being capable of supplying to a fuel gas supply unit a fuel gas of constant pressure which fluctuates little. In a fuel gas supply system 1, a high-pressure tank 3 and a gas injector 5 are connected to each other by a supply passage 4, and an electromagnetic pressure regulating valve 6 is provided on the supply passage 4. The electromagnetic pressure regulating valve 6 is configured to regulate the pressure of the gas, flowing through the supply passage 4, to pressure corresponding to a current supplied to the electromagnetic pressure regulating valve 6. The gas pressure downstream of the electromagnetic pressure regulating valve 6 is detected by a low-pressure-side pressure sensor 9. A controller 10 is electrically connected to the electromagnetic pressure regulating valve 6. The controller 10 controls the current supplied to the electromagnetic pressure regulating valve 6 such that pressure detected by the low-pressure-side pressure sensor 9 becomes predetermined target pressure.
摘要:
A start-assist circuit for increasing the fuel-injection voltage during the startup of an internal combustion engine having fuel injectors, a starter solenoid, and a battery is provided. The boost circuit receives the battery DC power and then boosts the battery voltage to provide an output having a level sufficient for a fuel injection solenoid during the start process.