A unique orbital IC engine, illustrating advantages of engineering to academia relationships

A new engine block with optical access has been designed and manufactured capable of running up to 3000 r/min with the same specification as the unmodified engine. The optical window allowed access to the full length of the liner over a width of 25 mm to investigate the lubricant flow and cavitation at contact point between the rings and cylinder-liner. In addition, it allowed good access into the combustion chamber to allow charged flow, spray and combustion visualisation and measurements using different optical methods. New custom engine management system with build in LabView allowed for the precise full control of the engine. The design of the new optical engine was a great success in producing high quality images of lubricant flow, cavitation formation and development at contact point at different engine speeds ranging from 208 to 3000 r/min and lubricant temperatures (30°C–70°C) using a high-speed camera. The results under motorised operation confirmed that there was no cavitation at contact points during the intake/exhaust strokes due to low in-cylinder presure, while during compression/expansion strokes, with high in-cylinder pressure, considerable cavities were observed, in particular, during the compression stroke. Lubricant temperatures had the effect of promoting cavities both in their intensity and covered ring area up to 50°C as expected. Beyond that, although the cavitation intensity increases further with temperature, its area reduces due to possible collapse of the cavitating bubbles at higher temperature. The change of engine speed from 208 to 800 r/min increased cavitating area considerably by 52% of the ring area and was further increased by 19% at 1000 r/min. After that, the results showed very small increase in cavitation area (1.3% at 2000 r/min) with similar intensity and distribution across the ring.

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Piston ring and cylinder liner for IC engine

Sealing Technology ◽

10.1016/s1350-4789(09)70520-3 ◽

2009 ◽

Vol 2009 (9) ◽

pp. 15

Keyword(s):

Piston Ring ◽

Cylinder Liner ◽

Ic Engine

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Analysis of Higher Alcohol Fuel Blends for IC Engine—A Review

Lecture Notes in Mechanical Engineering - Advances in Interdisciplinary Engineering ◽

10.1007/978-981-13-6577-5_58 ◽

2019 ◽

pp. 605-612

Author(s):

Rahul Sharma ◽

Dilip Kumar ◽

Mayank Chhabra ◽

Gaurav Dwivedi

Keyword(s):

Higher Alcohol ◽

Ic Engine ◽

Fuel Blends ◽

Alcohol Fuel

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Acoustic Source Data for Medium Speed IC-Engines

Journal of Vibration and Acoustics ◽

10.1115/1.4006415 ◽

2012 ◽

Vol 134 (5) ◽

Cited By ~ 5

Author(s):

Antti Hynninen ◽

Raimo Turunen ◽

Mats Åbom ◽

Hans Bodén

Keyword(s):

High Frequency ◽

Internal Combustion Engines ◽

Low Frequency ◽

Acoustic Source ◽

Ic Engine ◽

Source Characteristics ◽

Medium Speed ◽

Source Data ◽

Exhaust Noise ◽

Ic Engines

Knowledge of the acoustic source characteristics of internal combustion engines (IC-engines) is of great importance when designing the exhaust duct system and its components to withstand the resulting dynamic loads and to reduce the exhaust noise emission. The goal of the present study is to numerically and experimentally investigate the medium speed IC-engine acoustic source characteristics, not only in the plane wave range but also in the high frequency range. The low frequency acoustic source characteristics were predicted by simulating the acoustic multiload measurements by using a one-dimensional process simulation code. The low frequency in-duct exhaust noise of a medium speed IC-engine can be quite accurately predicted. The high frequency source data is estimated by averaging the measured acoustic pressures with different methods; using the simple cross-spectra averaging method seems promising in this instance.

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Conception of an indirectly controlled servo valve for IC engine valve position control

2016 17th International Carpathian Control Conference (ICCC) ◽

10.1109/carpathiancc.2016.7501064 ◽

2016 ◽

Cited By ~ 1

Author(s):

Leander Behre ◽

Theo van Niekerk ◽

Paolo Mercorelli ◽

Nils Werner

Keyword(s):

Position Control ◽

Ic Engine ◽

Engine Valve ◽

Servo Valve ◽

Valve Position

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Analysis of Surface Waste Heat Recovery in IC Engine by Using TEG

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.787.782 ◽

2015 ◽

Vol 787 ◽

pp. 782-786 ◽

Cited By ~ 3

Author(s):

R. Prakash ◽

D. Christopher ◽

K. Kumarrathinam

Keyword(s):

Waste Heat ◽

Electrical Power ◽

Electrical Energy ◽

Surface Heat ◽

Heat Energy ◽

Ic Engine ◽

Point Tracking ◽

Power Point Tracking ◽

Power Point ◽

Heat Energy Recovery

The prime objective of this paper is to present the details of a thermoelectric waste heat energy recovery system for automobiles, more specifically, the surface heat available in the silencer. The key is to directly convert the surface heat energy from automotive waste heat to electrical energy using a thermoelectric generator, which is then regulated by a DC–DC Cuk converter to charge a battery using maximum power point tracking. Hence, the electrical power stored in the battery can be maximized. Also the other face of the TEG will remain cold. Hence the skin burn out accidents can be avoided. The experimental results demonstrate that the proposed system can work well under different working conditions, and is promising for automotive industry.

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