초록 ▼

A fuel injection system for internal combustion engines has at least one stroke-controlled injector. A pressure booster that has a movable piston is connected between the at least one injector and a high-pressure working medium source. The movable piston divides a primary chamber, which can be conne

A fuel injection system for internal combustion engines has at least one stroke-controlled injector. A pressure booster that has a movable piston is connected between the at least one injector and a high-pressure working medium source. The movable piston divides a primary chamber, which can be connected to the high-pressure working medium source, from a pressure chamber that communicates with the at least one injector and is filled with fuel. The pressure booster generates a first fuel system pressure in the injector, which is used for the injection. The fuel injection system has means for furnishing a further, second fuel system pressure, and these means can be used for injection without activating the pressure booster.

대표청구항 ▼

1. A fuel injection system ( 1 ; 30 ; 32 ; 34 ; 35 ; 37 ; 38 ) for internal combustion engines, comprisingat least one stroke-controlled injector ( 10 ),a high pressure working medium source ( 5 ),a pressure booster ( 9 ) having a movable piston ( 26 ) connected between the at least one injector ( 1

1. A fuel injection system ( 1 ; 30 ; 32 ; 34 ; 35 ; 37 ; 38 ) for internal combustion engines, comprisingat least one stroke-controlled injector ( 10 ),a high pressure working medium source ( 5 ),a pressure booster ( 9 ) having a movable piston ( 26 ) connected between the at least one injector ( 10 ) and the high-pressure working medium source ( 5 ), the movable piston ( 26 ) dividing a primary chamber ( 13 ), which is connectable to the high-pressure working medium source ( 5 ), from a pressure chamber ( 8 ), which communicates with the at least one injector ( 10 ) and is filled with fuel, the pressure booster ( 9 ) generating a first fuel system pressure in the injector ( 10 ), which pressure is used for injection, andmeans for furnishing a further, second fuel system pressure, which means can be used for injection without activating the pressure booster ( 9 ), further comprising means for generating the second fuel system pressure from the first fuel system pressure, which first fuel system pressure is compressed by the pressure booster ( 9 ). 2. The fuel injection system of claim 1 further comprising separate local reservoirs for furnishing the second fuel system pressure for each injector ( 10 ). 3. The fuel injection system of claim 1 further comprising means for furnishing the second fuel system pressure jointly for all the injectors ( 10 ). 4. The fuel injection system of claim 1 further comprising means for furnishing the second fuel system pressure jointly for all the injectors ( 10 ). 5. The fuel injection system of claim 3 further comprising a central reservoir for the second fuel pressure. 6. The fuel injection system of claim 4 further comprising a central reservoir for the second fuel pressure. 7. The fuel injection system of claim 3 further comprising a high-pressure pump for generating the second, central fuel pressure. 8. The fuel injection system of claim 4 further comprising a high-pressure pump for generating the second, central fuel pressure. 9. The fuel injection system of claim 5 further comprising a high-pressure pump for generating the second, central fuel pressure. 10. The fuel injection system of claim 6 further comprising a high-pressure pump for generating the second, central fuel pressure. 11. The fuel injection system of claim 3 further comprising a pressure booster for generating the second fuel pressure. 12. The fuel injection system of claim 4 further comprising a pressure booster for generating the second fuel pressure. 13. The fuel injection system of claim 5 further comprising a pressure booster for generating the second fuel pressure. 14. The fuel injection system of claim 6 further comprising a pressure booster for generating the second fuel pressure.