Device for regeneration, temperature loading and/or thermal management, associated injection valve and method

Abstract

The invention relates to a device for the regeneration, temperature loading and / or thermal management of a component, assigned to an exhaust system, of an internal combustion engine, comprising at least one injection valve (10, 100, 200) which injects a fluid, in particular fuel, into the exhaust system, preferably in chatter mode, for example as a function of the pressure of the supplied fluid, wherein the injection valve has a valve head (11, 110) and a valve seat (13, 130), wherein the geometries of the valve head (11, 110) and of the valve seat (13, 130) are designed in such a way that a fluidic force, acting on the injection valve (10, 100, 200), of the supplied fluid, drops continuously over a stroke (H) of the valve head (11, 110). The invention also relates to an injection valve having such valve-head and valve-seat geometries and to a corresponding method for the regeneration, temperature loading and / or thermal management of a component, assigned to an exhaust system, of an internal combustion engine.

Description

technical field [0001] The invention relates to a device for regeneration, temperature loading and / or thermal management of components of an internal combustion engine assigned to an exhaust system and an injection valve for use in such a device and to a device for regenerating components assigned to an exhaust system according to the independent claims. The method by which components of the system are regenerated, temperature loaded, and / or thermally managed. Background technique [0002] It is already known to install particulate filters in the exhaust system of internal combustion engines of vehicles. If the internal combustion engine is, for example, a diesel engine, the particle filter acts, for example, as a soot filter and reduces the fine dust load due to its filtering action. In order to avoid clogging of the filter after a certain period of use, it is necessary to regenerate the filter from time to time. The regeneration takes place by increasing the temperature,...

AI Technical Summary

Problems solved by technology

However, the described multi-hole and single-hole injection valves have the disadvantage that the holes are clogged or carbon-deposited under existing operating conditions due to soot deposits present in the exhaust gas

Since the supply of fuel to the injection valve does not take place at a constant pressure due to the components involved, but there are pressure fluctuations, possibly also short-term pressure peaks, a stoppage of the oscillating operation can occur

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