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Method for operating an internal combustion engine and internal combustion engine

An internal combustion engine, combustion engine technology, applied in the direction of an internal combustion piston engine, a component of a pumping device for elastic fluid, a combustion engine, etc., can solve problems such as a decrease in compressor efficiency

Active Publication Date: 2021-10-01
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This so-called backflow foam causes a drop in compressor efficiency due to swirl losses and mixing losses

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] figure 1 The internal combustion engine 10 according to the present invention with the combustion engine 10 configured to be an Oto engine is shown, and the combustion engine 10 is configured with a plurality of cylinders 12. The cylinder 12 is intended to limit the combustion chamber with a cylinder cover (not shown) in which the cylinder head guided inward and downward is in which fresh gases are combined with fuel. Here, the fuel controlled by the control device 14 (the engine control unit) is directly injected into the combustion chamber by means of the injector 16. Fuel-fresh gas-mixed amounts of combustion results in circulating up and downward movement of the piston, which is in a known manner to the crankshaft of the same not shown via the not shown, thereby rotating the crankshaft.

[0067] The fresh gas is delivered to the combustion engine 10 via the fresh gas branch and is suction from the surrounding environment via the intake port 18, purified in the air filt...

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PUM

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Abstract

The invention relates to a method for operating an internal combustion engine and an internal combustion engine, in particular a method for operating an internal combustion engine is provided, wherein the internal combustion engine comprises at least one combustion engine and a fresh gas branch, and wherein a compressor is integrated into In the fresh gas branch, the compressor is associated with an adjustment element, by means of which an edge-side section of the inlet cross-section of the compressor impeller of the compressor can be covered to a variable extent. In this case, the edge-side section of the inlet cross-section is covered relatively little in the open state of the adjustment part and relatively largely covered in the covered state of the adjustment part. It is arranged that, when approximately the same compressor pressure ratio (πv) and approximately the same fresh gas mass flow (ṁ) as well as approximately the same compressor efficiency are achieved in the two operating states, the adjustment element between the open state and the covered state between adjustments. As a result, the most favorable possible adjustment of the adjustment element can be achieved.

Description

Technical field [0001] The present invention relates to a method for operating in an internal combustion engine and a suitable internal combustion engine for performing such a method. The invention also relates to a motor vehicle with this internal combustion engine. Background technique [0002] The fresh gas compression of the combustion engine of the internal combustion engine will be transported to the internal combustion engine in the compressor of the internal combustion engine. Here, the increase in the pressure of the fresh gas depends on the speed of the compressor impeller and the mass flow of fresh gases guided via the compressor impeller. In the direction of the so-called pumping limit of the compressor characteristic curve, the inrush flow of the impeller blade is increasing in the pressure side, that is, the incidence of the inrush flow continues to increase. . The limit value related to the operating point of the occurrence rate, that is, the so-called pumping limi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/22F02D23/00F02C6/12F01D17/14F04D27/02
CPCF01D17/14F02B37/22F02C6/12F02D23/00F04D27/02F02B37/225F02B37/24F02B2037/125F02D41/0007F02D41/1448F04D25/024F04D27/0253F05D2220/40F05D2250/51F02M26/06Y02T10/12F02D23/005F04D27/0246F04D29/462
Inventor S.海因肯J.巴托洛梅M.瓦尔迪克D.哈格尔斯坦A.施塔茨
Owner VOLKSWAGEN AG