In this engine building, the engine has three rows of cylinders placed at an angle. The angle between the cylinder rows form a ‘W’ shape and that’s the reason it’s a ‘W’ engine design. However, essentially the most commonly used engines in automotive functions are Inline, V, W, and Flat engine designs. The Rootes Group dreamed up this beast to power its Commer-branded vehicles. The TS3 provided ingenious packaging, connecting-rod rocker arms the scale of a small cat, and at 270 lb-ft of torque, extra grunt than many bigger diesels of the time. During the consumption stroke, valves open to permit the piston to behave like a syringe as it moves downward, drawing in ambient air through the engine’s consumption system.