Enhancing NOx Removal with Fractional Controller is a comprehensive guide for researchers, engineers, and practitioners working in the field of diesel engine exhaust emissions control. The author of this book is, an experienced researcher and expert in the area of control systems engineering. The book provides a detailed analysis of the NOx removal efficiency from diesel engine exhaust using a fractional order-based LQR-PIλ controller. It discusses the challenges faced in controlling the NOx emissions from diesel engines, which have become a significant environmental concern due to their adverse impact on air quality and human health. The book presents a novel approach based on fractional calculus and the LQR-PIλ controller to improve the NOx removal efficiency. The theoretical concepts and the practical implementation of the proposed method are explained in detail, along with simulation results and experimental validation. Furthermore, the book provides an in-depth understanding of the underlying principles of fractional calculus and the LQR-PIλ controller, making it a valuable resource for students and researchers new to the field. The author's expertise and extensive research experience are evident in the clarity and depth of the content presented in the book. Overall, Enhancing NOx Removal with Fractional Controller is an essential reference for anyone interested in the development and implementation of control strategies for diesel engine exhaust emissions control, with a specific focus on NOx removal efficiency.