Conversion of Stationary Diesel Engine into Producer Gas-Engine Operated in Spark Ignited Mode

Abstract

Decentralized power supply for remote and urban areas via gasifier-engine system is an attractive choice especially when sources of fossil fuel are getting depleted and leading to serious emission hazards. In gasifier, the solid biomass is converted into “producer gas,” which can fuel a gas-engine in single fuel mode i.e., complete substitution. The conversion of stationary diesel engine into producer gas-engine (i.e., complete substitution) ensure complete independency from fossil fuels; although it demands major modifications/retrofitting arrangements. Herein, an existing diesel engine of capacity 7.4 kW is chosen and converted into producer gas-engine operated on single fuel mode (spark ignited) at compression ratio of 14:1. Other arrangements such as installation of spark ignited mode (i.e., ignition coil and distributor followed by contact breaker unit), gasoline carburetor and special induction system followed by other necessary arrangements were carried out. A kit is suggested for conversion of different capacity and types engines utilizing alternate/renewable gaseous fuels. A considerable power loss (power derating) and reduction in thermal efficiency is observed while operation in single producer gas mode. More detailed experiments are required to predict qualitative performance trends.

Real-time experimental investigation of a multi-flow biomass gasifier by using various locally available wood biomass

“…The quality of producer gas is affected by some parameters such as equivalence ratio, air flow rate, and type of biomass etc. The cooled and cleaned gas can be utilized in internal combustion engines in single fuel mode by modifying the existing engines [13].…”