Study on waste heat recovery from exhaust gas spark ignition (S.I.) engine using steam turbine mechanism

Talib, Kamarulhelmy; Herawan, Safarudin Gazali; Tahir, Musthafah Mohd; Putra, Azma; Shamsudin, Shamsul Anuar

doi:10.1051/matecconf/20179001057

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Engine exhaust energy power increases with the engine speed because more engine speed provides more air and fuel to mix to release more exhaust energy. Talib et al [20] reported a similar trend of the exhaust gas energy for variation of the engine speed. However, their engine was a 1.6 liter in-line 4-cylinder gasoline engine.…”

Section: Motor As a Generatormentioning

confidence: 64%

“…However, they reported that the lower engine speed was not viable to improve the engine performance as the exhaust gas contained much lower energy for the lower engine speed. Talib et al [20] conducted experiments with the waste heat recovery mechanism (WHRM) from the SI engine where water was used as the heat absorption medium. Kennedy et al [21] confirmed that the output power is strongly affected by the turbine inlet temperature and system pressure drop through the Inverted Brayton Cycle for exhaust gas energy recovery.…”

Section: Introductionmentioning

confidence: 99%

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Energy Recovery from Exhaust Gas of Diesel and Petrol Engine by Turbo-electric Generator

Mazumder

Hasan

Ayon

et al. 2022

Int. J. Automot. Mech. Eng.

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A turbo-electric generator has been placed on the exhaust port of the petrol and diesel engines to investigate the possibility of recovering energy from the exhaust gas. Turbo-electric generator is a combination of a turbocharger and a generator. The aim of the study is to find the possibility and effectiveness of the turbo-electric generator for recovering the energy from the exhaust gas of an engine. The test has been conducted on the two engines, i.e. first one is TD 202 small test engine bed (diesel engine) and another one is Honda CG125 cc (petrol engine) motorcycle. Two types of motor i.e. DC motor and AC motor have been used as generators by altering the way a motor works. Firstly, a DC motor is used as a generator in the turbo-electric generator for both test engines. The results show that turbo-electric generator recover less than 1% energy of the exhaust gas for both engines when a DC motor is used as a generator (TD 202 and Honda CG125 cc motorcycle). But in case of Honda CG125 cc motorcycle, the percentage of recovering energy is comparatively higher than the TD 202 test engine. The experiment is further extended by using an AC motor as a generator only for the Honda CG125 cc motorcycle. The results show better energy recovering from exhaust gas through turbo-electric generator, which is more than 1% of exhaust gas. The results reveal that the engine speed and the mass flow rate of the exhaust gas play a major role in harvesting the energy from the exhaust gas. Moreover, it is found that the turbo-electric generator module provides good efficiency when an AC motor is used as a generator in the module. The experimental results have been compared with available literature.

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Section: Motor As a Generatormentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Energy Recovery from Exhaust Gas of Diesel and Petrol Engine by Turbo-electric Generator

Mazumder

Hasan

Ayon

et al. 2022

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

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Utilization of ICE exhaust gas as a heat source for pyrolysis of natural rubber as automobile fuel

Wasantakorn

Chaiyanboon

2018

Journal of Renewable and Sustainable Energy

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This research determined the gain of thermal efficiency of an internal combustion engine when its exhaust gas was utilized as a heat source for natural rubber pyrolysis. A 350-cc motorcycle engine was selected as a testing engine for carrying out the experiments. Its exhaust system was modified to have a pyrolyser fixed inside, and the exhaust heat was transferred through its surface toward the NR samples to cause pyrolysis. The exhaust port was designed to flare in order to reduce the exhaust velocity. Its static temperature was thus increased, which increased driving heat inside the pyrolyser. In case of determination of the NR pyrolysis rate, the NR samples were heated by the exhaust coming up by keeping the gear status at idle and setting an rpm value of 3200. The amount of the obtained NR pyrolysis products was plotted against time. Pyrolysis rates at each interval of time were determined and also plotted against the point of time, whereas the amount of gasoline consumed under the same interval of time was used to calculate the consumption rate. In the case of determination of the amount of heat recovery from the exhaust for the pyrolysis, a diffential scanning calorimeter-thermogravimetric analyser (DSC-TGA) hybrid was used as a pyrolyser instead of the modified engine, and the samples were run at the same temperature and under the same CO2 atmosphere as the engine did. The amount of the NR absorbed heat can be more precisely determined by using the DSC-TGA than by using the engine pyrolyser. Only the liquid fraction of the NR pyrolysis products, not gases, was collected and characterized by gas chromatography/mass spectrometry (GC/MS) and Fourier transform inflared spectroscopy (FTIR) techniques. The results show that the distilled NR oil contains plain C-H atoms of 97 wt. % and hydrocarbon with O atoms only 2.94 wt. %. This oil approximately contains 10 wt. % of the aliphatic chain and 87.4 wt. % of aromatic chain hydrocarbons. If the oil were supposed to feed back as the engine fuel, the thermal-efficiency gain of 0.43 percentage point could be obtained by the calculation, and the author believes that this would be the first IC engine that can consume solid fuel, i.e., natural rubber.

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Study on waste heat recovery from exhaust gas spark ignition (S.I.) engine using steam turbine mechanism

Cited by 2 publications

References 13 publications

Energy Recovery from Exhaust Gas of Diesel and Petrol Engine by Turbo-electric Generator

Energy Recovery from Exhaust Gas of Diesel and Petrol Engine by Turbo-electric Generator

Utilization of ICE exhaust gas as a heat source for pyrolysis of natural rubber as automobile fuel

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