Abstract: A system for supplying fuel to an internal combustion engine. The system comprises a first fuel pump, which is designed to deliver fuel from a reservoir to the internal combustion engine. The system furthermore comprises a suction jet pump which is designed to fill the reservoir with fuel. In addition, the system comprises a second fuel pump which is designed to operate the suction jet pump. The system furthermore comprises a control unit which is designed to operate the second fuel pump if a fuel fill level falls below a predefinable threshold value.

Abstract: An injection system for an internal combustion engine having at least one combustion chamber is provided, the wall of the combustion chamber having a first inlet port, which is closable by a first inlet valve, and a second inlet port, which is closable by a second inlet valve, the injection system including a first injector for metered injection of fuel into the area of the first inlet port, a second injector for metered injection of fuel into the area of the second inlet port, a catalytic converter unit, and a heating device for rapidly heating the catalytic converter unit.

Abstract: An injection device for an internal combustion engine having a first injection system for injecting fuel having a first fuel composition, and a second injection system for the injection of fuel having a second fuel composition that has a lower ethanol component than the first fuel composition, the first injection system having at least one first fuel injector for injecting fuel having the first fuel composition both in the direction of a first intake orifice of a combustion chamber of the internal combustion engine, and in the direction of a second intake orifice of the combustion chamber, in which the second injection system has a second fuel injector for injecting fuel having the second fuel composition essentially only in the direction of the first intake orifice, and a separate third fuel injector for injecting fuel having the second fuel composition essentially only in the direction of the second intake orifice.

Abstract: In a method for operating an injection system for an internal combustion engine having a combustion chamber, in a first method step, a first inlet valve to the combustion chamber is opened and fuel is injected into the combustion chamber through the open first inlet valve by a first injector, and in the first method step, a second inlet valve to the combustion chamber is furthermore opened and fuel is injected into the combustion chamber through the open second inlet valve by a second injector, and in a second method step, additional fuel is subsequently injected into the combustion chamber through the still open first inlet valve by the first injector.

Abstract: The invention relates to a tank arrangement (2), comprising a fuel tank (4) comprising at least one fuel chamber (6, 6a, b), a tank installation unit (8) arranged in the fuel tank (4), a fuel pump element (10) arranged in the installation unit (8) and designed to make fuel (12) available from the tank arrangement (2) to a fuel user (14), a pump unit (6, 16a, b) arranged in the fuel chamber (6, 6a, b) and operatively connected to the fuel pump element (10) and designed to convey fuel (12) out of the fuel chamber (6, 6a, b) into the tank installation unit (8), and a pressure regulating element (18), functionally arranged between fuel pump element (10) and pump unit (16). The arrangement is characterised in that the pressure regulating element (18) is designed as a mechanical pressure regulator.

Abstract: A method and a device for supplying fuel into a combustion chamber of a cylinder of an internal combustion engine, in which an air-fuel mixture is supplied to the cylinder via at least two intake sections, which are connected to the cylinder via an intake valve, and each of the intake sections is assigned an injector, fuel being injected into the intake sections in at least intermittently asynchronous manner.

Abstract: An injection device for an internal combustion engine is proposed having at least one injection valve system for injecting fuel into an intake manifold of the internal combustion engine and at least one heating device for pre-heating fuel injected by the injection valve system, the injection valve system including a first injection valve for injecting fuel in the direction of a first inlet opening of a combustion chamber of the internal combustion engine and a separate, second injection valve for injecting fuel in the direction of a second inlet opening of the combustion chamber.

Abstract: Method and apparatus for detecting tank leaks, in which a gas pressure acts on a fluid which is situated in a tank, and in which the gas pressure in the tank or tank system is changed, wherein a tank leak is detected by evaluation of a temporal profile of a sum pressure of the fluid which is situated in the tank.

Abstract: In a method for operating an internal combustion engine of a motor vehicle, a driver type is ascertained. A criterion for performing a diagnosis or a regeneration of a component of the fuel supply system is a function of the ascertained driver type.

Abstract: A method for detecting the tank fuel level of a motor vehicle includes: ascertaining the tank level sensor signal (UTSG) of a tank level sensor, determining a calculated tank level (Fcalc) as a function of a fuel quantity consumed by the internal combustion engine, and providing a corrected tank level signal as a function of the tank level sensor signal (UTSG) and the calculated tank level (Fcalc).

Abstract: A fuel injection system (1) with at least one fuel injector (1a) and a heatable adapter (1b), which is connected to a fuel rail (1c) and to the fuel injector (1a) of the fuel injection system (1); a thermoswitch (2) is provided in the fuel rail (1c), which is connected with an external door contact switch (3) and with the heatable adapter (1b). The thermoswitch (2) includes a thermosensor, so that a reliable cold start is ensured by the fact that, when a previously specified fuel temperature is fallen below, the thermoswitch (2) switches over and causes fuel (8) to be heated.

Abstract: In the operation of a fuel system of an internal combustion engine, the fuel is compressed by a fuel pump and travels by way of at least one fuel injection device into at least one combustion chamber of the internal combustion engine. It is proposed that at least periodically during a phase immediately when starting or just after starting the internal combustion engine, the fuel pump is actuated corresponding to an increased set point pressure. An increase in the set point pressure, however, is blocked if at least one blocking condition is met.

Abstract: A fuel injection system (1) with at least one fuel injector (1a) and a heatable adapter (1b), which is connected to a fuel rail (1c) and to the fuel injector (1a) of the fuel injection system (1); a thermoswitch (2) is provided in the fuel rail (1c), which is connected with an external door contact switch (3) and with the heatable adapter (1b). The thermoswitch (2) includes a thermosensor, so that a reliable cold start is ensured by the fact that, when a previously specified fuel temperature is fallen below, the thermoswitch (2) switches over and causes fuel (8) to be heated.

Abstract: Method and apparatus for detecting tank leaks, in which a gas pressure acts on a fluid which is situated in a tank, and in which the gas pressure in the tank or tank system is changed, wherein a tank leak is detected by evaluation of a temporal profile of a sum pressure of the fluid which is situated in the tank.

Abstract: In a method for operating an internal combustion engine of a motor vehicle, a driver type is ascertained. A criterion for performing a diagnosis or a regeneration of a component of the fuel supply system is a function of the ascertained driver type.

Abstract: In the operation of a fuel system (10) of an internal combustion engine (12), the fuel is compressed by a fuel pump (20) and travels by way of at least one fuel injection device (24) into at least one combustion chamber (36) of the internal combustion engine (12). It is proposed that at least periodically during a phase immediately when starting or just after starting the internal combustion engine (12), the fuel pump (20) is actuated corresponding to an increased set point pressure. An increase in the set point pressure, however, is blocked if at least one blocking condition is met.