APPLICATION OF DRY CELL HHO GAS GENERATOR WITH PULSE WIDTH MODULATION ON SINJAI SPARK IGNITION ENGINE PERFORMANCE

Bambang Sudarmanta, Sudjud Darsopuspito, Djoko Sungkono

Abstract: Dry cell HHO gas generator performance optimization was done by varying the duty cycle of pulse width modulation, pwm. HHO gas generated subsequently applied to the Sinjai spark ignition engine port injection, 2-cylinder 650 cc with gas inlet mechanism using a venturi. Variations performed on HHO gas generator is the duty cycle of pwm, ie 20%, 40%, 60%, 80% and 100% (or the same as non pwm). The parameters of performance were calculated includes specific energy input, efficiency and temperature of the HHO generator. HHO gas is obtained then used as a fuel mixture in the Sinjai engine and inserted through a venturi mechanism which is mounted on the duct of combustion air inlet. Furthermore, the effect of the addition of HHO gas on the performance of the Sinjai engine measured includes parameters of torque, power, BMEP, specific fuel consumption and thermal efficiency. Sinjai engine performance optimization done on setting ignition timing for minimum advance for best torque, MBT mechanism. The results show that optimum performance of HHO gas generator is generated by pwm system with 40% duty cycle with parameters such as specific energy input of 33,121 MJ/kg, generator efficiency of 20,064% and generator temperature can be maintained below 60 0C. Application of HHO gas generator in point above on standart ignition timing Sinjai engine produce in an increase of performance such as torque, power, BMEP and thermal efficiency respectively of 2.27%, 2.76% and 3.05% and a decrease of bsfc 7.76 %. Retarded ignition timing is adjusted to MBT is able to increase performance such as torque, power, thermal efficiency, respectively 6.55%, 7,65%, 15,50% and a decrease of bsfc 22,06 %.

Keywords: Sinjai Engine, HHO Gas Generator, HHO Gas, PWM, MBT And Engine Performance

DOI: https://doi.org/10.15623/ijret.2016.0502019