Parashuram R. Chitragar
@vpkbiet.org
Professor
VPKBIET Baramati
RESEARCH, TEACHING, or OTHER INTERESTS
Mechanical Engineering, Fuel Technology, Energy, Multidisciplinary
Scopus Publications
Scopus Publications
P. R. Chitragar, K. V. Shivaprasad, Manjunath Ichchangi, Rajesh Ravi, M. S. Yadav, and G. N. Kumar
Wiley
AbstractThis article presents a study that compares the performance and emission characteristics of a four‐stroke, four‐cylinder spark ignition (SI) engine fueled by gasoline and neat hydrogen. The engine was equipped with turbocharging to optimize ignition timing for power boosting and vaporized water–methanol injection to reduce emissions. Engine tests were conducted at speeds ranging from 2000 to 6000 rpm, with a fixed intake pressure and varying quantities of hydrogen and spark advance timings. The study compared the results of non‐turbocharged and turbocharged engines with water–methanol injection in terms of combustion, performance, and emissions. The findings showed that the turbocharged water–methanol hydrogen operation had a higher brake thermal efficiency (BTE) than its counterpart, while the brake power of the hydrogen engine operation increased with turbocharging but slightly decreased with water–methanol injection. Additionally, volumetric efficiency improved by 7% for turbocharged and 4% for water‐injected hydrogen engine operation compared to the counterpart. The cylinder pressure for turbocharging with water–methanol operation yielded 16.32% higher compared with counterpart gasoline engine operation. Finally, nitrogen oxides (NOx) emissions were reduced with turbocharging and water–methanol injection compared to the counterpart non‐turbocharged hydrogen engine operation.
Machindra S. Gaikwad, Avinash H. Kolekar, Keshav M. Jadhav, Mona S. Yadav, and Parashuram R. Chitragar
Informa UK Limited
This paper deals with the experimental investigation of dual-fuelled CI (compression ignition) engine with the biomethane-diesel combination. The 30% and 60% energy shares of biomethane were provid...
Parashuram R. Chitragar, K. V. Shivaprasad, M. S. Gaikwad, and G. N. Kumar
AIP Publishing
In respect of depletion of fossil fuel and its harmful effect on the environment, research on alternative fuel engines has fascinated large attention from the engine society. Among the several options considered today, hydrogen conceivably the ideal fuel in view of its immeasurable clean-burning qualities, source availabilities and thus promises to be the greatest potential fuel. This article explores the investigation on combustion, performance and emission characteristics of four-cylinder, four-stroke spark ignition (SI) engine experimentally. Tests were carried out by using pure gasoline and pure hydrogen by different loads and speeds at static ignition timing of 5-degree crank angle before top dead center (deg. CA bTDC). The experimental study discovered the decrement in brake power along with volumetric efficiency and increment in brake thermal efficiency with hydrogen fuel engine operation compared to gasoline operation. In-cylinder pressure is notably increased with hydrogen and peak pressure was shifted towards TDC in comparison with gasoline engine operation. The net heat release rate is enhanced with neat hydrogen engine operation compared to gasoline. The emissions of carbon monoxide (CO), hydrocarbons (HC) were condensed and a nitrogen oxide (NOx) was amplified for hydrogen compared to gasoline engine operation.
Machindra S. Gaikwad, Keshav M. Jadhav, Avinash H. Kolekar, and Parashuram R. Chitragar
Informa UK Limited
ABSTRACT In this investigation biomethane and diesel fuel were used in a compression ignition (CI) engine with a dual fuel mode of operation. Biomethane is induced along with the intake air stream while diesel fuel is injected in a conventional way. Experiments were carried out on an exhaust gas recirculation (EGR)-equipped CI engine (single cylinder, four stroke, water cooled). The main goal of this investigation is to study the combustion characteristics of a biomethane–diesel fuel combination in dual fuel mode of a CI engine. The EGR system is also used in the dual fuel mode of operation to determine its effects. Cylinder pressure, rate of pressure rise, and heat release are the combustion parameters examined. Experimental results showed that all combustion parameters give lower values in the dual-fuel mode of operation compared to straight diesel operation. EGR again reduces the values of combustion parameters in dual-fuel mode.
Kumar Vijayalakshmi Shivaprasad, P.R. Chitragar, and Gottigere Narayanappa Kumar
National Library of Serbia
The fuel depletion and environmental pollution have pushed studies on improving the combustion and emission characteristics of internal combustion engines with several alternative fuels. Expert studies proved that hydrogen is one of the prominent energy source which has exceptional combustion qualities that can be used for improving combustion and emissions performance of gasoline-fueled spark ignition engines. This paper introduced an experiment conducted on a single cylinder high speed gasoline engine equipped with a hydrogen injection system to discover the combustion and emissions characteristics with various hydrogen gasoline blends at idle condition. For this purpose, the conventional carburetted high speed spark ignition engine was modified into an electronically controllable engine with help of electronic control unit which dedicatedly used to control the ignition timings and injection duration of gasoline fuel.
K. V. Shivaprasad, Parashuram R. Chitragar, Vignesha Nayak, and G. N. Kumar
Informa UK Limited
Abstract This article experimentally investigates the effect of spark timing on performance and emission characteristics of high-speed spark-ignition (SI) engine operated with different hydrogen–gasoline fuel blends. For this purpose, the conventional carbureted SI engine is modified into an electronically controllable engine, wherein an electronically controllable unit was used to control the ignition timings and injection duration of gasoline. The tests were conducted with different spark timings at the wide open throttle position and 3000 rpm engine speed. The experimental results demonstrated that brake mean effective pressure and engine brake thermal efficiency increased first and then decreased with the increase in spark advance. Peak cylinder pressure, temperature and heat release rate were increased until 20% hydrogen addition and with increased spark timings. NOx emissions were continuously increased with the increment in both spark timings and hydrogen addition, whereas hydrocarbon emissions were increased with spark timings but decreased with hydrogen addition. CO emissions were reduced with the increase in spark timing and hydrogen addition.
Parashuram R Chitragar, K V Shivaprasad, and G N Kumar
SAE International
Parashuram Bedar, P. R. Chitragar, K. V. Shivaprasad, and G. N. Kumar
Springer India
P.R. Chitragar, K.V. Shivaprasad, Vighnesh Nayak, P. Bedar, and G.N. Kumar
Elsevier BV
Vighnesha Nayak, G.S. Rashmi, Parashuram Chitragar, and P. Mohanan
Elsevier BV
K. V. Shivaprasad, P. R. Chitragar, and G. N. Kumar
Wiley
AbstractThis study describes an experiment conducted using an electronically controllable single‐cylinder high‐speed gasoline engine to analyze the performance and emissions characteristics of various hydrogen–gasoline blends. The experiments have been conducted for various engine speeds and spark timings at the wide open throttle position. The experimental results revealed that the engine brake thermal efficiency and brake mean effective pressure first increase and then decrease with the increase engine speed at all spark timings. The minimum amount of brake specific energy consumption was observed for 20 % hydrogen addition in the total fuel blend at 3000 rpm engine speed and 14 °crank angle (CA) before top dead center (BTDC) spark timing. Hydrocarbon and carbon monoxide emissions were reduced with the retardation of spark timings. Nitrogen oxide emissions were continuously increased with the addition of hydrogen in the fuel blend as well as spark timing advance.
KV Shivaprasad, PR Chitragar, and GN Kumar
SAE International
The present article aims at characterizing the combustion and emission parameters of a single cylinder high speed SI engine operating with different concentrations of hydrogen with gasoline fuel. The conventional carburetted SI engine was modified into an electronically controllable engine, wherein ECU was used to control the injection timings and durations of gasoline. The engine was maintained at a constant speed of 3000 rpm and wide open throttle position. The experimental results demonstrated that heat release rate and cylinder pressure were increased with the addition of hydrogen until 20%. The CO and HC emissions were reduced considerably whereas NOx emission was increased with the addition of hydrogen in comparison with pure gasoline engine operation.