Ever since the industrial revolution, machines has played a crucial role in our lives, businesses have prospered with the use of machines to increase productivity and lowering cost. Machines are made up of various items with a specific function in ensuring the equipment perform its intended task. For the likes of a cylinder head which is used alongside a head gasket to seal a cylinder block and key to controlling air flow in and out of the cylinders and fuel deployment. Or a piston, which acts as a movable end of the combustion chamber. Along with many other parts (Spark plug, valves, piston rings, connecting rod, crankshaft) which are essential for an engine to function.
Efficiency & Power performance are two of the most asked questions when comparing between a diesel and petrol engine. The fundamentals of both engines are similar and the type of fuel burned by either power plant doesn’t change anything in relation to the engine’s general markeup. (e.g. a crankshaft spinning, connecting rods and pistons moving up and down, air being pumped in and exhaust being routed out.) Thus the basic architecture is very much the same. However what goes on in-cylinder in a diesel is vastly different from what you’ll find in its petrol-powered counterpart. The easiest way to explain the difference between petrol and diesel engines is with “air” and “fuel”. In a petrol engine, airflow is everything, you’re throttling air. A diesel mill is the polar opposite. It works on the premise of throttling the amount of fuel being injected – the air simply follows suit.
Knowing what to check will give you a good indication of an engine’s overall condition An engine inspection may seem a huge task for individuals like me who are not trained in engines/machineries, however after speaking to some thought leaders in the industry, here are some insights that they share, and how they would go about conducting an engine inspection.
The mechanical design of internal combustion engines, particularly diesel engines is a challenging and interesting task. Since the combustion process in the diesel engine is never uniform and smooth, they are prone to more vibration and noise compared to petrol engines. Thus diesel engines require a rugged structural design. Out of the four strokes, it is only during the power stroke that a tremendous amount of force is exerted on the piston. So a single cylinder engine will always have high force non-uniformity.