Abstract: A four-stroke reciprocating piston internal combustion engine is disclosed. The engine includes an even number of cylinders grouped into a first half and a second half. An exhaust gas turbocharger has a first turbine inlet and a second turbine inlet. Each of the cylinders has an intake duct with an intake opening, a first exhaust duct with a first exhaust opening, and a second exhaust duct with a second exhaust opening. The first half of cylinders is connected via the respective first exhaust ducts to the first turbine inlet and is connected via the second exhaust ducts to the second turbine inlet. The second half of cylinders is connected via the respective first exhaust ducts to the second turbine inlet and is connected via the respective second exhaust ducts to the first turbine inlet. The respective second exhaust openings have a larger diameter than the respective first exhaust openings.

Abstract: A four-stroke reciprocating piston internal combustion engine is disclosed. The engine includes an even number of cylinders grouped into a first half and a second half. An exhaust gas turbocharger has a first turbine inlet and a second turbine inlet. Each of the cylinders has an intake duct with an intake opening, a first exhaust duct with a first exhaust opening, and a second exhaust duct with a second exhaust opening. The first half of cylinders is connected via the respective first exhaust ducts to the first turbine inlet and is connected via the second exhaust ducts to the second turbine inlet. The second half of cylinders is connected via the respective first exhaust ducts to the second turbine inlet and is connected via the respective second exhaust ducts to the first turbine inlet. The respective second exhaust openings have a larger diameter than the respective first exhaust openings.

Abstract: In a method of shutting down an internal combustion engine, the shutdown of the internal combustion engine is executed upon initiation of the shut-down procedure starting from a defined operating condition which is selected in such a way that a desired rest position of the crankshaft is achieved from which the engine can be rapidly restarted.

Abstract: A method and apparatus are provided for switching on and off the internal combustion engine which drives a vehicle by way of a manual transmission. The manual transmission is associated with a clutch for producing and releasing the frictional connection between the internal combustion engine and drive train. The clutch has a clutch operator for producing and releasing the frictional connection to the drive train. The clutch is actuable by a driver by way of a clutch pedal. A variable representing the engaging speed of the clutch operator is detected. If this variable exceeds a limit value, the starting of the internal combustion engine is interrupted.

Abstract: In a fuel supply system for an internal combustion engine with direct fuel injection including a fuel supply pump and, downstream thereof, a high pressure pump for supplying high pressure fuel to a plurality of injectors and, parallel to the high pressure fuel pump, a hydraulic transmission operated by the low pressure fuel of the fuel supply pump for generating initially high pressure fuel to the fuel injectors so as to permit instant engine startup upon actuation of a valve disposed in the fuel supply line from the fuel supply pump to the hydraulic transmission.

Abstract: A method and apparatus are provided for switching on and off the internal combustion engine which drives a vehicle by means of a manual transmission. The manual transmission is associated with a clutch for producing and releasing the frictional connection between the internal combustion engine and drive train. The clutch has a clutch operator for producing and releasing the frictional connection to the drive train. The clutch is actuable by a driver by means of a clutch pedal. According to the invention, a variable representing the engaging speed of the clutch operator is detected. If this variable exceeds a limit value, the starting of the internal combustion engine is interrupted.

Abstract: 1. Internal combustion engine comprising a gas conveying system and operating method therefor. 2.1 The invention proposes an internal combustion engine (1) having a gas conveying system with a turbine (7) which can be driven by an airstream and a pump (8) which can be driven by the turbine (7) and by means of which gas can be fed to the exhaust system (3, 4, 5), as well as an operating method therefor. 2.2. According to the invention, when the internal combustion engine (1) is starting up, the quantity of fuel injected into it is set as a function of the delivery capacity of the pump (8). 2.3. Use in motor vehicles, in particular in passenger cars having an internal combustion engine with fuel injection.

Abstract: In a method of shutting down an internal combustion engine, the shutdown of the internal combustion engine is executed upon initiation of the shut-down procedure starting from a defined operating condition which is selected in such a way that a desired rest position of the crankshaft is achieved from which the engine can be rapidly restarted.

Abstract: In a fuel supply system for an internal combustion engine with direct fuel injection including a fuel supply pump and, downstream thereof, a high pressure pump for supplying high pressure fuel to a plurality of injectors and, parallel to the high pressure fuel pump, a hydraulic transmission operated by the low pressure fuel of the fuel supply pump for generating initially high pressure fuel to the fuel injectors so as to permit instant engine startup upon actuation of a valve disposed in the fuel supply line from the fuel supply pump to the hydraulic transmission.

Abstract: In an internal combustion engine for a motor vehicle, comprising a starter system and a control system for controlling the internal combustion engine, the control system of the internal combustion engine is configured for a defined coast down of the internal combustion engine, by means of which pollutants that are left in the internal combustion engine are fed to the catalytic converter system for afterburning, while the control system actuates the starter system for a specific first period of time following a last combustion event in a combustion chamber.

Abstract: A method for operating an internal combustion engine of a motor vehicle having an engine control unit and an exhaust-gas catalytic converter. In the invention, the engine control unit is used to switch off the internal combustion engine in an idling mode and/or in an overrun mode of the internal combustion engine, depending on the temperature of the exhaust-gas catalytic converter and an exhaust-gas temperature.

Abstract: A method for operating an internal combustion engine of a motor vehicle having an engine control unit and an exhaust-gas catalytic converter. The invention, the engine control unit is used to switch off the internal combustion engine in an idling mode and/or in an overrun mode of the internal combustion engine, depending on the temperature of the exhaust-gas catalytic converter and an exhaust-gas temperature.

Abstract: In an exhaust system for an internal combustion engine having two groups of cylinders with a separate exhaust line for each cylinder group, each including an upstream catalytic converter and a downstream catalytic converter and a control valve, a first transverse connection extending between the exhaust lines upstream of the upstream catalytic converters and a second transverse connection extending between the exhaust lines between the upstream and downstream catalytic converters, the valves are so arranged and controlled that, during warm-up, the exhaust gases from both cylinder groups flow through the upstream catalytic converter of one, and the downstream catalytic converter of the other exhaust line for rapid heat up of one of the catalytic converters in each of the exhaust lines.

Abstract: In an exhaust system for an internal combustion engine having two groups of cylinders with a separate exhaust line for each cylinder group, each including an upstream catalytic converter and a downstream catalytic converter and a control valve, a first transverse connection extending between the exhaust lines upstream of the upstream catalytic converters and a second transverse connection extending between the exhaust lines between the upstream and downstream catalytic converters, the valves are so arranged and controlled that, during warm-up, the exhaust gases from both cylinder groups flow through the upstream catalytic converter of one, and the downstream catalytic converter of the other exhaust line for rapid heat up of one of the catalytic converters in each of the exhaust lines.