• P.V.Ramana
• D.Maheswar
• B.Uma Maheswar Gowd

The consumption of conventional fuels are increasing from year to year and leading to faster depletion of fuel reserves. so it become necessary to improve the technology to minimize the consumption and substituting alternative fuels for future development and also to minimize the exhaust gas emissions. Stringent emissions standards that are being enforced in many countries around the world are encouraging vehicle manufacturers to meet such emissions norms as EURO 5, the ACEA agreement and EURO 6.Due to the stringent emission norms, the research in the field of internal combustion engines in general and diesel engines in particular gathered huge importance and also increasing demand on fuel consumption. So high demands are there on large gas engines and attention placed in the areas of performance, fuel consumption and emissions. One way to reach this goal is by introducing new combustion concept engine like Homogeneous Charge Compression Ignition (HCCI) engines promise high thermal efficiency combined with low levels of nitric oxide and particulate matter emissions. However, due to the absence of an immediate means of triggering ignition, stable operation over a wide range of conditions and transient control have proven most challenging and have so far prevented commercialization by opening up new technical avenues, such as micro-hybridization and bio fuels. Most alternative fuel conversions involve reconfiguring a gasoline or diesel vehicle or engine to operate on natural gas, propane, alcohols, or on a blend of conventional and alternative fuels. Use of clean alternative fuels opens new fuel supply choices and can help consumers address concerns about fuel costs, energy security, and emissions. HCCI engines can operate on gasoline, diesel fuel, and most alternative fuels. HCCI combustion is achieved by controlling the temperature, pressure, and composition of the fuel and air mixture so that it spontaneously ignites in the engine. This control system is fundamentally more challenging than using a spark plug or fuel injector to determine ignition timing as used in SI and DI engines, respectively. The purpose of this study is to summaries the alternative fuel effect on the HCCI engine combustion process.

HCCI, CI, SI, alternate fuels, VVT, DME, VVA

"Development of Alternative fuels for HCCI Engine Technology", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 4, page no.1326-1338, May-2015, Available :http://www.jetir.org/papers/JETIR1504090.pdf

"Development of Alternative fuels for HCCI Engine Technology", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 4, page no. pp1326-1338, May-2015, Available at : http://www.jetir.org/papers/JETIR1504090.pdf