Study of super/turbocharger system for helicopter diesel engine
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Kharkiv National Automobile and Highway University
University of Warmia and Mazury in Olsztyn
National Technical University Kharkiv Polytechnic Institute
Oleksandr Vrublevskyi   

University of Warmia and Mazury in Olsztyn
Submission date: 2021-04-12
Final revision date: 2021-07-15
Acceptance date: 2021-07-26
Online publication date: 2021-08-13
Publication date: 2021-08-13
Diagnostyka 2021;22(3):25–34
The article demonstrates a rational scheme of the supercharging system in a helicopter diesel engine with a power of 100 kW, regardless of the flight altitude, and proposes a method for assessing the power losses for a diesel engine depending on the flight altitude using a mathematical model. There are three variants of an engine supercharger scheme with a single-stage turbocharger, a two-stage one with parallel or sequential compressor drive and a turbo-blower. As a result of the computational analysis according to the original method, it was shown that from the point of view of the least energy consumption two-stage scheme with a compressor and a sequential drive is the most rational. To reduce energy losses in the drive with two-stage supercharging, a concept for controlling the pressure system was proposed, which includes changing the rotational speed of the compressor drive and adjusting the throttles. Simulation of the engines running during the climb / descent of the helicopter showed that the proposed pressure scheme and control concept is effective. In order to improve the quality of regulation, the possibility to use an electric drive with the first stage compressor is being considered.
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