1 option
Study of Dual Fuel Engine for Low Calorie Biomass Gas Yanmar Company, ltd
- Format:
- Conference/Event
- Author/Creator:
- Wakizaka, Wakizaka, author.
- Conference Name:
- Small Engine Technology Conference & Exposition (2010-09-28 : Linz, Austria)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2010
- Summary:
- The role of biomass energy is becoming more and more importantin renewable energy. As biomass energy utilization has the problemsof collection and transportation. A small-scale dispersed powersource is required. Biomass gasification CHP (combined heat andpower) system converting biomass energy into gas for CHP at hightemperature is one of the most effective solutions because of itshigh energy conversion efficiency.Dual fuel engine which can ignite low calorie biomassgasification gas by injected light oil is suitable for woodybiomass gasification gas of changing calorie and amount. The effectof gas ratio which is defined as gas energy ratio in total inletenergy, injection timing, throttling and gas composition on theperformance and exhaust emission of dual fuel engine wasinvestigated by using 2 kinds of model gas which consists of H₂,CO, CH₄, CO₂ and N₂. As gas ratio of low calorie gas increases, NOxand thermal efficiency decrease but CO and THC increase. At 58% gasratio (BMEP = 0.24 MPa) advanced injection timing can improvethermal efficiency and decrease THC and CO. When throttling wasused at light load, thermal efficiency can be improved. But,because at high load thermal efficiency is highest and NOx, Sd(Smoke density) are lowest at WOT, throttle should be wide open. Asfirst model gas has no CH₄ and high level of CO and H₂, exhaustemission of first model gas has low THC and high CO.The dual fuel engine has optimized the injection timing and hasinstalled an oxidation catalyst to reduce CO. The dual fuel engineruns by using gas from the biomass gasification CHP system ofdowndraft type. The thermal efficiency is achieved over 35% and COemission level was less than 100 ppm. Under over 70% gas ratiocondition, NOx emission level is less than 300 ppm in 0% O₂
- Notes:
- Vendor supplied data
- Publisher Number:
- 2010-32-0051
- Access Restriction:
- Restricted for use by site license
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