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Internal combustion engine and method for operating the internal combustion engine

A technology for internal combustion engines and motion, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as failures, component throttle valves, turbocharger valve dirt, efficiency loss, etc.

Active Publication Date: 2016-10-26
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the introduction of blow-by gas into the intake manifold, components such as throttle valves, turbochargers or valves can become very dirty
Especially in turbochargers and charge air coolers possible loss of efficiency and malfunctions due to oil contamination

Method used

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  • Internal combustion engine and method for operating the internal combustion engine
  • Internal combustion engine and method for operating the internal combustion engine
  • Internal combustion engine and method for operating the internal combustion engine

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Embodiment Construction

[0021] figure 1 , 2 and 3 show an internal combustion engine 1 with a crankcase 2 in which a crankshaft 3 is arranged movably about an axis of rotation not shown. In the configuration of the internal combustion engine 1 shown here, the crankcase 2 is delimited on one side by an oil sump 4 and on the other side by a cylinder 5 . The invention can also be used in other configurations of the internal combustion engine 1 , for example in V-engines or opposed-cylinder engines. A piston 6 is arranged in translational motion within the cylinder 5 . Piston 6 closes working chamber 7 of internal combustion engine 1 from crankcase 2 . Piston 6 is connected to crankshaft 3 via connecting rod 8 , also called drive rod. The blow-by gas entering the crankcase 2 next to the piston 6 is indicated by small arrows as blow-by flow 10 . The blow-by flow 10 is conveyed via a gas recirculation device 11 to the fresh-gas side of the internal combustion engine 1 , not shown in detail. Only the c...

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PUM

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Abstract

The invention relates to a method for operating an internal combustion engine (1) in which a blow-by stream (10) containing a fine oil mist is discharged from a crankcase (2), and supplied to the charge-air side of the internal combustion engine (1), by means of a gas recirculation device (11), wherein the blow-by stream (10) is treated as it passes through an oil separator (13) arranged in the gas recirculation device (11) and, before and / or during the treatment in the oil separator (13), a coarse oil mist (16) is moved into the blow-by stream (10). The invention also relates to an internal combustion engine (1) having a crankcase (2) which is connected via a gas outlet opening (9) to a gas recirculation device (11), and in which, in the crankcase (2), there are arranged guide elements (14) for generating and maintaining a gas circulation (15). The invention finally relates to an internal combustion engine (1) having a crankcase (2) which is connected via a gas outlet opening (9) to a gas recirculation device (11), and in which a spray device for generating a coarse oil mist (16) is arranged in the crankcase (2) and / or in the gas recirculation device (11).

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine, in which a blow-by flow containing fine oil mist is discharged from the crankcase via a gas return device and fed to the charge air, wherein the blow-by flow is passed through a gas return device arranged at the gas return The oil separator inside the device is processed. Background technique [0002] In internal combustion engines, also internal combustion engines or piston engines, blowby refers to gases that flow from the working chamber into the drive chamber during compression on the piston rings. Unburned fuel squeezes into the crankcase during compression. During the combustion cycle, hot and often dirty gases containing corrosive substances enter the crankcase. The engine oil can be heavily loaded due to the continuous action of blowby gases. To reduce this load and gas pressure in the crankcase, the crankcase is vented. Exhaust is usually achieved by means of a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M13/04
CPCF01M13/04
Inventor T.布勒克H.本内克R.西默
Owner VOLKSWAGEN AG
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