Conventional Fuel Injection System in Two-Stroke Engines
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2013, Vol 4, Issue 4
Abstract
Carburetted 2-stroke engines are a worldwide pandemic. There are over 50 million 2-stroke cycle engines in Asia alone, powering motorbikes, mopeds, “three-wheelers”, “auto-rickshaws”, “tuk-tuks”, and “tricycles”. These carbureted 2-stroke engines are characterized by high levels of hydrocarbon (HC), carbon monoxide (CO), and particulate matter (PM) emissions. Direct injection is a technology that has shown a great ability to reduce these emissions while at the same time improve fuel economy. A prototype kit has been designed for use in retrofitting existing carbureted two-stroke engines to direct injection. The kit was designed for use on a TVS 50; a motorcycle from the INDIA that is commonly used as a transportation. It is however, a relatively common engine design and TVS manufactures similar models for sale all over the world. The conventional fuel injection system kit incorporates the Orbital air blast direct injection system. This injection system has been implemented in TVS 50. The design involved replacing the existing cylinder head with one designed to incorporate the direct injection valves as well as a modified combustion chamber. An external compressor was added to supply compressed air to the system. The carburettor was refined with a throttle body outfitted with a position indicator, and an encoder system was added to provide speed and position feedback to the engine control unit (ECU). Once design and manufacture of the system was complete, it was installed on the motorcycle. The motorcycle was then mounted in a low inertia eddy current dynamometer test cell for calibration. Calibration was done on the dynamometer for power and engine performance. The system was also tuned in real world road tests for drivability. When calibrations were complete emissions and fuel consumption measurements were taken for the vehicle. The results showed an 88% reduction in hydrocarbon emissions and a 72% reduction in carbon monoxide emissions versus the baseline engine, while at the same time virtually eliminating visible smoke. The CFI system also showed a 32% increase in fuel economy, and had similar to better performance than the carbureted engine. The CFI system also showed improved cranking and idling characteristics over the carbureted engine.
Authors and Affiliations
P. Sanjaikumar1 , K. Ashok kumar2 , S. Tamilselvan3 , M. Surya
Keywords
Related Articles
- EP ID EP141027
- DOI -
- Views 91
- Downloads 0
Fabrication and Testing of an Improved Hydraulic Accumulator for a Truck Loading Lift
The hydraulic accumulator stores the required amount of energy in the form of pressurised fluid from a pump, and then expends this energy when it is fully charged within a short time in order to do work effectively. The...
Grid-Connected Photo Voltaic System Design for Koya Software Engineering Department in Iraq
The depletion of fossil fuel resources on a worldwide basis has necessitated an urgent search for alternative energy sources to meet up the present day demands. Solar energy being a clean, inexhaustible and environment-f...
Survey of Watermarking Algorithms For Medical Images
Watermarking is a branch of information hiding which is used to hide proprietary information in digital media like photographs, digital music, or digital video. And also which has seen a lot of research interest...
Content Based Image Retrieval Using Spatial Features
The field of image retrieval technologies have enabled the creation of large image datasets. It is necessary to develop appropriate information systems to efficiently manage these collections. An image retrieval system i...
An Empirical Data Cleaning Technique for CFDs
Data cleaning is a basic data preprocessing technique for before forwarding the data to data mining approach ,but it leads to an intresting research area in the field of data mining. Data cleaning is the process of...