The effects of compression ratio and simulated exhaust-gas recirculation (EGR) on combustion characteristics and exhaust emissions of a diesel PCCI engine were investigated using a single-cylinder test engine. Tests were carried out under constant speed with various compression ratios and EGR rates. Exhaust emissions and in-cylinder pressure were measured for all experimental conditions. https://safeersappliancers.shop/product-category/bosch-kgn33nl3ag-a-rated-60-40-split-no-frost-fridge-freezer-in-inox-stainless/