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Supercharged internal combustion engine with exhaust turbocharger and method of operation thereof

A technology for internal combustion engines and supercharging, applied to internal combustion piston engines, combustion engines, machines/engines, etc., can solve problems such as expensive geometric structures, limited maneuverability, and blockages

Active Publication Date: 2019-08-02
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, equipping a compressor with variable compressor geometry is expensive
Furthermore, the maneuverability by means of variable compressor geometry is also limited, since adjustment of the guide wheels is only possible to a certain extent
Furthermore, in the case of relatively large compressor flows, the guides constitute a flow resistance and thus cause a slight blockage

Method used

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  • Supercharged internal combustion engine with exhaust turbocharger and method of operation thereof
  • Supercharged internal combustion engine with exhaust turbocharger and method of operation thereof
  • Supercharged internal combustion engine with exhaust turbocharger and method of operation thereof

Examples

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Embodiment Construction

[0035] Under part load and / or low speed conditions in a turbocharged engine, the mass flow through the compressor is relatively low, resulting in operation very close to or even within the surge region of the compressor map. This causes acoustic and durability problems due to pressure fluctuations at the compressor blades (stall condition at the blades). Compressor configurations that enable low mass flow operation without stalling at the compressor blades can reduce susceptibility to surge. If the air entering the compressor shows a swirl in the same direction as in the direction of rotation of the compressor wheel, the resulting angle of attack is reduced. This improves the flow at the compressor blades (avoidance of stall effects) and shifts the surge risk towards lower mass flows. Depending on air mass flow and compressor speed, the required level of swirl motion will vary to avoid surge conditions.

[0036] According to examples disclosed herein, a switchable exhaust ga...

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Abstract

The invention relates to a supercharged internal combustion engine with an exhaust gas turbocharger and a method of operating the same. Embodiments are provided for inducing swirl upstream of the compressor. In one example, a method includes, during a first condition, flowing exhaust gas from downstream of a turbine to upstream of a compressor via a tangential flow conduit of an exhaust gas recirculation (EGR) injector, wherein the exhaust gas recirculation ( An EGR injector circumferentially surrounds the intake passage upstream of the compressor; and during a second condition, exhaust gas flows from downstream of the turbine to upstream of the compressor via a radial flow conduit of the EGR injector.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from German Patent Application No. 102014216162.2 filed on 14.08.2014, the entire content of which is hereby incorporated by reference for all purposes. technical field [0003] The present disclosure relates to a supercharged internal combustion engine. Background technique [0004] An internal combustion engine can be used as a motor vehicle drive unit. In the context of the present disclosure, the expression "internal combustion engine" includes diesel engines and Otto cycle engines and hybrid internal combustion engines utilizing a hybrid combustion process, as well as not only internal combustion engines but also all Hybrid drive for electric machines that absorb power or output additional power as a switchable auxiliary drive. [0005] In recent years, there has been a trend towards the development of small, highly supercharged engines, where supercharging is primarily a method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/00F02C6/12F02M26/04F02M26/17
CPCF02B2037/125F02C3/34F02D41/0007F02D41/0065F04D29/4213F04D29/441F04D29/661F05D2220/40F05D2250/51F05D2270/101F02M26/05F02M26/06F02M26/09F02M26/17F02M26/25F02M26/07F02M2026/005Y02T10/12F02B39/00
Inventor J·克默林H·M·金德尔V·斯米利亚诺夫斯基F·A·萨默候夫A·库斯克
Owner FORD GLOBAL TECH LLC
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