Variable Geometry Compressors for Heavy Duty Truck Engine Turbochargers

Author:

Wöhr Michael1,Müller Markus1,Leweux Johannes1

Affiliation:

1. Daimler AG, Heavy Duty Engine Development, Stuttgart 70546, Germany e-mail:

Abstract

This paper presents the development approach, design, and evaluation of three turbocharger compressors with variable geometry for heavy duty engines. The main goal is the improvement of fuel economy without sacrifices regarding any other performance criteria. In a first step, a vaned diffuser parameter study shows that efficiency improvements in the relevant operating areas are possible at the cost of reduced map width. Concluding from the results, three variable geometries with varying complexity based on vaned diffusers are designed. Results from the hot gas test stand and engine test rig show that all systems are capable of increasing compressor efficiency and thus improving fuel economy in the main driving range of heavy duty engines. The most significant differences can be seen regarding the engine brake performance. Only one system meets all engine demands while improving fuel economy.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Experimentally Validated Extension of the Operating Range of an Electrically Driven Turbocharger for Fuel Cell Applications;Machines;2021-12-02

2. Design of a transonic centrifugal compressor for High-speed turbomachinery;Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science;2020-09-09

3. Establishment of Meanline Compressor Mathematical Model with Active Blade Load Distribution Control;2020 IEEE 18th World Symposium on Applied Machine Intelligence and Informatics (SAMI);2020-01

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