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Method for operating internal combustion engine and corresponding internal combustion engine

A technology of internal combustion engine and operation mode, applied in the direction of internal combustion piston engine, combustion engine, machine/engine, etc., which can solve the problems of high heat load of catalytic converter, deterioration of particle emission, and increased usage of carbon dioxide emission

Active Publication Date: 2016-09-21
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to an improvement or reduction of emissions due to afterburning, but at the same time causes a higher thermal load on the catalytic converter
Furthermore, CO2 emissions increase due to the increased use of fuel
Particle discharge may also worsen

Method used

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  • Method for operating internal combustion engine and corresponding internal combustion engine
  • Method for operating internal combustion engine and corresponding internal combustion engine

Examples

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Embodiment Construction

[0035] A method for operating an internal combustion engine is shown by way of example in the drawing. The internal combustion engine has an exhaust turbocharger, a catalytic converter and a variable valve train. A variable valve train is used to vary the actuation times of the intake valves and / or exhaust valves of an internal combustion engine, preferably both. In particular, the valve overlap can be adjusted by means of the valve train. The valve overlap is to be understood as the time period during which the intake and exhaust valves of the cylinders of the internal combustion engine are opened simultaneously. The method is carried out, for example, by means of a controller of the internal combustion engine.

[0036] As input variables, the load or torque of the internal combustion engine is provided along arrow 1 , and the rotational speed of the internal combustion engine is provided along arrow 2 . The load or torque together with the rotational speed define the oper...

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PUM

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Abstract

The invention relates to a method for operating an internal combustion engine comprising at least one turbocharger, at least one catalytic converter and a variable valve train, a valve overlap parameter being determined in at least one operating mode of the internal combustion engine and being used to set the valve train. According to the invention, the valve overlap parameter is adapted on the basis of at least one parameter for the condition of the catalytic converter and / or at least one parameter for the condition of the turbocharger, prior to being used to set the valve train. The invention also relates to an internal combustion engine.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine having the features of the preamble of claim 1 . The invention also relates to an internal combustion engine. Background technique [0002] The internal combustion engine is used, for example, to drive a motor vehicle, ie to provide the torque for driving the motor vehicle. The internal combustion engine is supercharged and has an exhaust-gas turbocharger for this purpose. The exhaust-gas turbocharger has a turbine and a compressor operatively connected to the turbine. Exhaust gas produced by the internal combustion engine during operation of the internal combustion engine is supplied to the turbine, wherein the turbine converts enthalpy and / or flow energy contained in the exhaust gas into kinetic energy, in particular rotational movement. This kinetic energy is used to drive the compressor. [0003] The compressor is used to compress the sucked-in air, especially fresh a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/02F02D13/02F02D41/00
CPCF02D13/0261F02D41/0007F02D41/0295F02D2041/001F02D2200/0802F02D2200/0814F02D2200/0816Y02T10/12F02D41/30
Inventor R·阿扎徳M·松纳K·韦伯
Owner AUDI AG