This is one of the best books for the Thermal Engineering subject. It explains complex topics like combustion chambers, fuel injection, and supercharging very simply. Highly recommended for university exams and competitive exams like GATE/IES.
Air-standard, fuel-air, and actual cycles. Ic Engine By V Ganesan.pdf
If possible, buy the physical copy for diagrams. Use the PDF for quick revision and problem-solving on the go. This is one of the best books for