ABSTRACT The most impactful technical innovations of our time are internal combustion engines and motorized vehicles. They've completely transformed our lives, our ways of thinking, and how we engage with and appreciate them. Internal combustion engine development and fuel/lubricant quality have been intertwined since the invention of the first engine. It was the first engine to be invented and intended to solely run on a specific type of fuel. It necessitates ongoing and close collaboration between engineers, researchers, and other industry specialists. A diesel engine, or diesel engine, is an internal combustion engine that uses diesel as a propellant and which runs on the diesel cycle. It was invented in 1892 by the German engineer Rudolf Diesel. The vast majority of diesel engines nowadays use a system that uses a pump to inject fuel, which can be done in a variety of ways. Older versions used a mechanical pump powered by a camshaft bump or a unique drive generated from the crankshaft, but subsequent versions have mostly contemporary common-rail or hydraulic injection systems with the pump and sprayer integrated into the block. Rimac Automobili is a Croatian company for the production of electric vehicles, propulsion systems and battery systems. The company is known for producing the fastest electric car CONCEPT ONE. A strong focus on developing your own products and long-term results means that most engineers are working on developing their own products. Throughout its operations, the company is committed to pushing the boundaries of technological possibilities in the segment of electric cars and technologies. As part of the development of cars, Rimac Automobili is developing a large number of systems, components and technologies that will find their application and market with other car manufacturers. Currently, the company is developing a new generation of motors, inverters, battery system, transmission system and infotainment.