... diesel, hydrogen, methane, or propane. From a technological perspective, gasoline-powered internal combustion engines have limitations in terms of performance and fuel-efficiency. Eventually they will have to be replaced by power systems that do not rely on internal combustion technology. A major problem with fuel efficiency is the technology in today's engines is nearly a century old. In a rather primitive sequence of events ... , a mixture of gasoline and air is sprayed into a cylinder. This is compressed by a piston and at an optimal point in the compression stroke; a spark plug creat...

• Word Count: 1287
• Approx Pages: 5
• Grade Level: Undergraduate