Effect of Exhaust Gas Recirculation (EGR) on the Performance Characteristics of a Direct Injection Multi Cylinders Diesel Engine. Tikrit j. eng. sci. [Internet]. 2016 Feb. 28 [cited 2026 Sep. 11];23(1):32-9. Available from: https://www.tj-es.com/ojs/index.php/tjes/article/view/271