Advances in IC Engines
Introduction to Combustion Process in the Spark-Ignition Engine with Dual-Injection System
In these times injection is the basic solution of supplying of fuel in the Spark-Ignition (SI) engines. The…
July 17, 2021 · Prabhu TLAuthor: Prabhu TL
Prabhu TL is a SenseCentral contributor covering digital products, entrepreneurship, and scalable online business systems. He focuses on turning ideas into repeatable processes—validation, positioning, marketing, and execution. His writing is known for simple frameworks, clear checklists, and real-world examples. When he’s not writing, he’s usually building new digital assets and experimenting with growth channels.
Advances in IC Engines
Introduction to Premixed Combustion in Spark Ignition Engines and the Influence of Operating Variables
In the context of a Spark Ignition engine, the inherent complexity of premixed combustion is exacerbated by a…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Hydrogen fuelled scramjet combustor
The scramjet engine is one of the most promising propulsive systems for future hypersonic vehicles. Over the last fifty years the scramjet engine technology has been intensively investigated and several such engines have been flight-tested in recent years (Neal, Michael, & Allan, 2005; Paul, Vincent, Luat, & Jeryl, 2004). Research on supersonic combustion technologies is of great significance for the design of the engine and many researchers pay significant attention to the hypersonic airbreathing propulsion. The mixing and diffusive combustion of fuel and air in conventional scramjet engines take place simultaneously in the combustor (Huang, Qin, Luo, & Wang, 2010). Since the incoming supersonic flow can stay in the combustor only for a very short period of time, i.e. of the order of milliseconds (Aso,…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Accurate Modelling of an Injector for Common Rail Systems
It is well known that the injection system plays a leading role in achieving high diesel engine performance; the introduction of the common rail fuel injection system (Boehner & Kumel, 1997; Schommers et al., 2000; Stumpp & Ricco, 1996) represented a major evolutionary step that allowed the diesel engine to reach high efficiency and low emissions in a wide range of load conditions. Many experimental works show the positive effects of splitting the injection process in several pilot, main and post injections on the reduction of noise, soot and NOx emission (Badami et al., 2002; Brusca et al., 2002; Henelin et al., 2002; Park et al., 2004; Schmid et al., 2002). In addition, the success of engine downsizing (Beatrice et al., 2003) and homogeneous charge combustion engines (HCCI) (Canakci & Reitz, 2004; Yamane & Shimamoto, 2002) is deeply connected with the injection system performance and injection strategy. However, the development of a high performance common rail injection system requires a considerable investment in terms of time, as well as money, due to the need of fine tuning the operation of its components and, in particular, of the electronic fuel injector. In this light,…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Effect of injector nozzle holes on diesel engine performance
The four-stroke direct-injection diesel engine typical was measured and modeled by Bakar et al (2007) using GT-POWER computational model and has explored of diesel engine performance effect based on engine speeds. GT-POWER is the leading engine simulation tool used by engine and vehicle makers and suppliers and is suitable for analysis of a wide range of engine issues. The details of the diesel engine design vary significantly over the engine performance and size range. In particular, different combustion chamber geometries and fuel injection characteristics are required to deal effectively with major diesel engine design problem achieving sufficiently rapid fuel-air mixing rates to complete the fuel- burning process in the time available. According to Heywood (1988) and Ganesan (1999), a wide variety of inlet port geometries, cylinder head and piston shapes,…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Experimental study of spray generated by a new type of injector with rotary swinging needle
Numerous papers have indicated that the present standard systems of injecting fuel directly into the combustion chamber, in the most economical, direct-injection diesel engines, have reached the limits of development. In order to maintain the emission of toxic components of exhaust gases within the ranges defined by both EURO V and projected EURO VI standards, various modifications to the combustion system will be necessary. It is known that injection through a conventional multi-hole nozzle, in combination with induced swirl in the air in the chamber, does not ensure that particulates and oxides of nitrogen are not formed. These toxic components are among the most difficult to subsequently remove from the exhaust…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Experimental Cells for Diesel Spray Research
The study of the combustion process in Diesel engines has been going even deeper into depth with the application of new techniques of measure and more rigorous methodologies. This has taken into new expectations in the development of parametric studies and in the construction of tools (physical models or experimental setup) that allow the reproduction of similar thermodynamic conditions to the ones present in the inside of a cylinder in a real thermal engine, making it possible to obtain greater approximations between the theoretical relation and the experimental one. Experimental setup classification The physical models or experimental setup used to study the injection-combustion process usually are of very specific characteristics, depending on the phenomena to analyse. These models can be classified in the three following groups: According…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Liquid Sprays Characteristics in Diesel Engines
For decades, the process of injecting an active fluid (diesel fuel) into the thermodynamic behaviour of a working fluid (air or gas) has been a priority in the research of the phenomena that occur in combustion systems. Due to technological improvements it’s possible in present times to characterise the injection fuel process in such conditions that match those happening when the engine is running under standard conditions, hence the purpose of these studies, which focus in the achievement of a perfect mixture between the working and active fluids; as a result of this, a series of consequences are triggered that lead to an optimum combustion, and therefore in the improvement of the engines capabilities. In Diesel engines the combustion process basically depends on the fuel injected into the…
July 17, 2021 · Prabhu TLFuel Injection
Introduction to Gasoline direct injection
The basic goals of the automotive industry; a high power, low specific fuel consumption, low emissions, low noise and better drive comfort. With increasing the vehicle number, the role of the vehicles in air pollution has been increasing significantly day by day. The environment protection agencies have drawn down the emission limits annually. Furthermore, continuously increasing price of the fuel necessitates improving the engine efficiency. Since the engines with carburetor do not hold the air fuel ratio close to the stoichiometric at different working conditions, catalytic converter cannot be used in these engines. Therefore these engines have high emission values and low efficiency. Electronic controlled Port Fuel Injection (PFI) systems instead of fuel system with carburetor have been used since 1980’s. In fuel injection systems, induced air can be metered precisely and the fuel is injected in the manifold to air amount. By using the lambda sensor in exhaust system, air/fuel ratio is held of stable value. Fuel systems without electronic controlled it is impossible to comply with the increasingly emissions legislation.…
July 17, 2021 · Prabhu TLDiesel Combustion Emission Conditioning
Introduction to Hardware-in-Loop Simulation Technology of High-Pressure Common-Rail Electronic Control System for Low-Speed Marine Diesel Engine
Oil price is increasing rapidly due to the oil reserve limited as a non-renewable resource. The proportion of…
July 17, 2021 · Prabhu TL