摘要:
In a method for controlling an internal combustion engine, in particular a diesel internal combustion engine, at least one variable is formed on a cylinder-specific basis, which variable characterizes a respective profile of a combustion in an associated combustion chamber, and the control of cylinder-specific fuel injection parameters is influenced as a function of said at least one variable which characterizes the combustion profile.
摘要:
In a method for controlling an internal combustion engine, in particular a diesel internal combustion engine, at least one variable is formed on a cylinder-specific basis, which variable characterizes a respective profile of a combustion in an associated combustion chamber, and the control of cylinder-specific fuel injection parameters is influenced as a function of said at least one variable which characterizes the combustion profile.
摘要:
Acquisition members having 20 to 40 weight percent of a latex binder and 60 to 80 weight percent of polyester fibers are useful in absorbent articles such as diapers and sanitary napkins. The polyester fibers may further include 20 to 80 weight percent of a first type of fiber, and 20 to 80 weight percent of a second type of fiber, wherein the second type of fiber has spiral-crimped fibers.
摘要:
A method for generating a homogeneous mixture for auto-ignition internal combustion engines and for controlling the combustion process, the internal combustion engine having an injection system and at least one cylinder/piston unit connected to an intake device, includes the steps of: a) exhaust-gas recirculation of hot exhaust gas from a previous combustion cycle into the combustion space or into the intake device or exhaust-gas retention of this exhaust gas in the combustion space or in the intake device; b) injection of fuel by the injection system into the retained or recirculated hot exhaust gas in order to generate a homogeneous fuel/air mixture; and c) cooling of the homogenized fuel/air mixture by expansion cooling or by isentropic compression in the respective cylinder/piston unit and/or by expansion cooling or by external cooling of a fuel/air mixture homogenized in at least one further cylinder/piston unit and recirculation of the cooled fuel/air mixture into the intake device.
摘要:
A method for operating a reciprocating-piston internal combustion engine, having an injector nozzle operable by a single valve element and configured to directly inject a fuel into a combustion chamber and having a piston including a piston crown and a piston recess, includes the steps of injecting the fuel by the injector nozzle into the combustion chamber in the form of separated jets of the fuel having different inclinations relative to a top surface of the piston crown and selectively setting the inclinations of the fuel jets depending on an engine load.
摘要:
A directly injecting internal combustion engine has at least one cylinder which has a combustion space and in which a piston executes an oscillating movement, and an injection nozzle for the injection of fuel into the combustion space. The piston has a piston recess which has in its central region an elevation extending in the direction of a cylinder head. A surface of the piston recess which adjoins the elevation in the direction of the recess edge is connected to the elevation via a radius so an injection jet impinging in this region and injected at the earliest possible time point is distributed both in the elevation direction and in the recess edge direction. The surface adjoining the elevation in that direction has an extent in that direction such that an injection jet injected at the latest possible time point impinges onto the surface and is distributed both in the elevation direction and in the recess edge direction.
摘要:
Acquisition members having 20 to 40 weight percent of a latex binder and 60 to 80 weight percent of polyester fibers are useful in absorbent articles such as diapers and sanitary napkins. The polyester fibers may further include 20 to 80 weight percent of a first type of fiber, and 20 to 80 weight percent of a second type of fiber, wherein the second type of fiber has spiral-crimped fibers.
摘要:
In a method for operating an internal combustion engine in which fuel is injected directly into a combustion chamber in a pre-injection and a main fuel injection step, and, if appropriate, also in a post-injection step by means of an injection nozzle with a plurality of injection bores, the injection of fuel takes place in a timed fashion and, to limit pressure and temperature during combustion of the fuel in the combustion chamber, a quantity of water is introduced into the combustion chamber during or after the pre-injection step.
摘要:
A method is provided for operating an internal combustion piston engine, in which fuel is injected directly into a working chamber in the form of a pre-injection and main injection by means of an injection nozzle with a plurality of injection holes. The pre-injection takes place in a clocked manner. In order to minimize the moistening of the walls of the combustion chamber, a higher fuel pressure prevails in an injection device during the main injection than during the pre-injection. Furthermore, optimum homogenization of the pre-injected quantity of fuel is obtained by restricting the range of the injected fuel jets while simultaneously maximizing the atomization of the fuel particles and reinforcing the disintegration of the fuel jets during the clocked pre-injection.
摘要:
Acquisition members having 20 to 40 weight percent of a latex binder and 60 to 80 weight percent of polyester fibers are useful in absorbent articles such as diapers and sanitary napkins. The polyester fibers may further include 20 to 80 weight percent of a first type of fiber, and 20 to 80 weight percent of a second type of fiber, wherein the second type of fiber has spiral-crimped fibers.