摘要:
A method for operating a fuel injection system is provided. The method includes injecting fuel from a first direct fuel injection device arranged in a cylinder liner in a cylinder block into a combustion chamber and injecting fuel from a second direct fuel injection device arranged in a cylinder head into the combustion chamber, the first and second direct fuel injection devices arranged at an obtuse angle with regard to an intersection of central axes of the first and second direct fuel injection devices.
摘要:
An internal combustion engine of a motor vehicle is provided. The internal combustion engine includes a coolant, a liquid/gas heat exchanger, a coolant-temperature-dependent control element, an equalizing tank, fluidic connections between the components, and a coolant pump. At least one direct or at least one activation-dependent fluidic connection or at least one force-transmitting connection is set up between a medium in the equalizing tank and a medium of at least one other media path or media circuit of the motor vehicle.
摘要:
Methods and systems are provided for a close-coupled aftertreatment device. In one arrangement, a system may include an engine comprising separate first and second overall exhaust lines, where a blow-off line branches off of the second overall exhaust line, and where the close-coupled aftertreatment device is arranged in the blow-off line and configured to receive exhaust gases during at least a cold-start of the engine.
摘要:
An internal combustion engine of a motor vehicle is provided. The internal combustion engine includes a coolant, a liquid/gas heat exchanger, a coolant-temperature-dependent control element, an equalizing tank, fluidic connections between the components, and a coolant pump. At least one direct or at least one activation-dependent fluidic connection or at least one force-transmitting connection is set up between a medium in the equalizing tank and a medium of at least one other media path or media circuit of the motor vehicle.
摘要:
A system is provided for an internal combustion engine including at least two cylinders, wherein the at least two cylinders form at least two groups, wherein each group has at least one cylinder, the at least one cylinder of at least one group being formed as a cylinder which can be activated in a load-dependent manner and which is deactivated if a predefined load is undershot. The at least two groups are characterized by different cylinder volumes, the at least one cylinder of a first group having a lesser cylinder volume and the at least one cylinder of a second group having a greater cylinder volume and configured as an activatable cylinder.
摘要:
A method for partial cylinder cutoff is provided. The method comprises operating a multi-cylinder internal combustion engine with applied ignition, in which an odd number n of cylinders is arranged in line, and during partial-load operation when engine load is below threshold, enabling a partial cutoff of the cylinders, the partial cutoff comprising operating each cylinder only intermittently such that each cylinder is fired and cut off in turn at an interval of (2*720° CA)/n.
摘要:
A method for controlling valve actuation in an engine is provided. The method includes initiating combustion operation in a first cylinder, opening, via a first cam, a first exhaust valve coupled to the first cylinder for a first opening duration. The method further includes opening, via a second cam, a second exhaust valve coupled to the first cylinder for a second opening duration not equivalent to the first opening duration.
摘要:
A direct-injection engine having a cylinder in which a combustion chamber is jointly formed by a piston crown of a piston, which is movable along the longitudinal axis of the cylinder, and a cylinder head, and an injection nozzle, which is arranged in the cylinder head on the opposite side of the piston crown eccentrically, spaced apart from the longitudinal axis of the cylinder, for the direct injection of fuel, which injection nozzle has a nozzle needle movable in a nozzle body, wherein the needle in the open position of the nozzle is moved into the combustion chamber, opening up an annular gap arranged between the nozzle body and needle.
摘要:
The disclosure relates to a method for operating an internal combustion engine having a plurality of cylinders, the method comprising, during one working cycle, distributing fuel for each cylinder of the plurality of cylinders among a plurality of injection processes according to settable split factors which respectively define a setpoint fuel mass and/or injection duration and time setting of each respective injection process for the plurality of individual injection processes, wherein random variation is carried out for at least one injection process.
摘要:
A method for an engine may comprise during a first condition comprising decreased scavenging, adjusting fuel injection based on a more-upstream air-fuel ratio, and during a second condition comprising increased scavenging, adjusting fuel injection based on one or more more-downstream air-fuel ratios and not based on the more-upstream air-fuel ratio. During the first condition, adjusting fuel injection may be further based on the one or more more-downstream air-fuel ratios.