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Method for avoiding pre-ignition in internal combustion engine and internal combustion engine and vehicle

A technology of pre-ignition, internal combustion engine, applied in the direction of internal combustion piston engine, combustion engine, engine ignition, etc.

Active Publication Date: 2017-03-01
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, depending on the boundary conditions of the engine, carbon deposits are usually formed in the combustion chamber and the components of the lubricating oil are transported into the combustion chamber

Method used

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  • Method for avoiding pre-ignition in internal combustion engine and internal combustion engine and vehicle
  • Method for avoiding pre-ignition in internal combustion engine and internal combustion engine and vehicle
  • Method for avoiding pre-ignition in internal combustion engine and internal combustion engine and vehicle

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Embodiment Construction

[0025] figure 2 Internal combustion engine 10 is shown with cylinders 11 , crankcase 12 , intake manifold 13 , compressor 14 and exhaust manifold 15 . An inlet valve 16 and an outlet valve 17 are arranged in the cylinder head of the cylinder 11 . Arranged in the combustion chamber 18 of the cylinder 11 is a piston 19 which drives a crankshaft 21 of the internal combustion engine 10 via a connecting rod 20 . The crankshaft 21 is located in the inner space 22 of the crankcase 12 . Furthermore, lubricating oil 23 is also present in interior space 22 , the lubricating oil for lubricating the movable parts of internal combustion engine 10 being pumped into the internal combustion engine by means of an oil pump not shown. Arranged in the intake manifold 13 is a throttle valve 24 for regulating the amount of fresh air supplied to the cylinders 11 in order to control the load of the internal combustion engine 10 . Internal combustion engine 10 also has other components, such as fu...

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PUM

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Abstract

The invention relates to a method for preventing pre-ignition of a cylinder working medium before a planned ignition time in an internal combustion engine. In the method, the pressure in the crankcase (12) of the internal combustion engine (10) is regulated in such a way that combustion through the crankcase (12) and combustion in the cylinders (11) of the internal combustion engine (10) is avoided. The pressure ratio between chambers (18) transfers lubricating oil components from the crankcase (12) to the combustion chambers (18). In another method, the ignition timing for the cylinders (12) of the internal combustion engine (10) is adjusted in certain operating ranges of the internal combustion engine (10) in such a way that the adjusted ignition timing occurs in the cylinder (12) of detonation combustion.

Description

technical field [0001] The invention relates to a method for preventing premature ignition of a working fluid in a cylinder in an internal combustion engine before the planned ignition time. Background technique [0002] In order to reduce the fuel consumption of vehicles such as passenger cars or trucks, internal combustion engines, in particular gasoline engines, are downsized and equipped with compressors, such as turbochargers. Downsizing of internal combustion engines is also referred to as "downsizing". During this miniaturization of gasoline engines with high boost and under particularly extreme conditions, such as poor fuel or high external temperatures, combustion anomalies occur at low speeds and high engine loads, This is called premature ignition. In addition, carbon deposits in the combustion chamber, the temperature of hot components and the composition of the lubricating oil can also lead to premature ignition (Vorentflammung). The term "pre-ignition" denot...

Claims

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Application Information

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IPC IPC(8): F01M13/00
CPCF01M13/00F02P5/152F02D35/02F01M2013/0005F01M2013/0088F01M2013/0094F01M2013/027F01M2013/0083F02D2250/08Y02T10/40F01M13/022
Inventor A.伯基格特
Owner VOLKSWAGEN AG
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