Emission and performance analysis of a diesel engine burning cashew nut shell oil bio diesel mixed with hexanol

Abstract

In this study, the effect of doping hexanol into biodiesel which is from neat cashew nut shell biodiesel oil on the emissions and the performance characteristics was studied in a constant speed diesel engine. The main purpose of this work is to reduce various emissions and also to improve the performance of the diesel engine when fueled with blends of hexanol and neat cashew nut shell biodiesel. Cashew nut shell oil is not edible, and hence it can be used as a viable alternative to diesel. Cashew nut shell biodiesel is prepared by conventional transesterification. Hexanol with 99.2% purity was employed as an oxygenated additive. Experimental studies were conducted by fueling diesel as a baseline and by fueling hexanol and neat cashew nut shell biodiesel mixture. A fuel comprising 10% (by volume) of hexanol and 90% (by volume) neat cashew nut shell biodiesel was referred to as CNSBD900H100 and fuel comprising 20% (by volume) of hexanol and 80% (by volume) of neat cashew nut shell biodiesel was referred to as CNSBD800H200. This study also investigated the possibility of using pure biofuel in an unmodified naturally aspirated diesel engine. The outcome of this study showed that adding hexanol at 10% and 20% (by volume) to cashew nut shell biodiesel results in a reduction in emissions. In addition, a significant improvement in brake thermal efficiency and reduction in brake-specific fuel consumptions were achieved. Hence, it could be concluded that hexanol could be a viable and promising additive for improving the drawbacks of biodiesel when it was used to fuel an unmodified diesel engine.

Emission and performance study emulsified orange peel oil biodiesel in an aspirated research engine

“…Biodiesel derived from palm kernel oil, orange peel oil or mustard oil is employed as a neat fuel or in blends with diesel in a compression ignition (CI) engine (Joy et al 2017;Venu and Madhavan 2017). The major drawback of using neat biodiesel in CI engines is its superior NO x emissions and lower thermal efficiency (Pandian et al 2018). NO x emissions should be controlled by suitable methods to meet the emission standards (Anbarasu et al 2015).…”

Experimental assessment of performance and exhaust emission characteristics of a diesel engine fuelled with Punnai biodiesel/butanol fuel blends

“…Further, cyclo-octanol also boosts the rate of dispersion in fuel. Pandian et al (2018) confirmed that hexanol addition lowered biodiesel (cashew nutshell) HC, CO emissions. Mahalingam (2018) found that the addition of pentanol to biodiesel reduces CO, NO x emissions.…”

Alcohol Contribution over Conventional Fuel

“…While the current state-ofthe-art diesel engines are typically turbocharged with cooled EGR, equipped with common rail direct injection (CRDI) and after-treatment for soot and NOx, a larger population of diesel engines sold in agricultural and construction equipment during the last few decades in India include naturally aspirated stationary diesel engines [19]. These engines are widely used in the Indian agricultural sector to drive siphon sets to supply water for water system purposes [20]. The present quantities of these diesel driven siphon sets in the nation is about 14.42 million.…”