Effect of exhaust gas recirculation and charge inlet temperature on performance, combustion, and emission characteristics of diesel engine with bael oil blends

Abstract

The threat of fossil fuel depletion and augmented environmental pollution caused by diesel fleets can be curbed by adopting suitable fuel and engine modifications. In the present work, effects of engine speed (r/min), injection timing, injection pressure and compression ratio on performance and emission characteristics of a compression ignition engine were investigated. The ternary test fuel of 65% diesel + 25% bael oil + 10% diethyl ether has been used, where the tests have been conducted at different charge inlet temperature and exhaust gas recirculation. All the experiments were conducted at the trade-off engine load that is 75% engine load. When the diesel engine operating with 320 K charge inlet temperature, brake thermal efficiency has been improved to 28.6%. Meanwhile reduced emission levels of carbon monoxide (0.025%) and hydrocarbon (12.3 ppm) were observed during the engine operation with 320 K charge inlet temperature and compression ratio of 18:1. The oxides of nitrogen have been reduced to 226 ppm at 16:1 compression ratio with 30% exhaust gas recirculation mode.

Influence of Areca Nutshell-Reduced Graphene Oxide, Isopropanol, and Exhaust Gas Recirculation in an Internal Combustion Engine

“…Emissions from internal combustion engines are influenced by the EGT, which is a measure of how much heat is generated during combustion. 21 The exhaust gas temperature provides further information on the efficiency of the engine, the air-to-fuel ratio, the temperature produced by diffusion combustion, and the amount of oxygen that is present. Figure 11 shows that when the concentration of isopropanol increases, EGT decreases.…”

Effect of port injection of ethanol on engine performance, exhaust emissions and environmental factors in a dual-fuel diesel engine

“…6 Additionally, these are primary harmful emissions sources in terms of cardiovascular and respiratory health. 7 Therefore, many alternative fuel 8–10 and combustion strategies are being explored to achieve lower emissions by the heterogeneous combustion in diesel engines. It is not always possible to replace all of the diesel fuel with another fuel.…”