This marks 100 years of continuous weather records for Phoenix. The assistance given by Mr. Robert S. Ingram, former Meteorologist in Charge, National Weather Service Office, Phoenix, Arizona, Mr. Paul C. Kangieser, former NOAA Climatologist for Arizona, and other staff members is gratefully acknowledged.
Most liquid fuels in widespread use are derived from the fossilized remains of dead plants and animals by exposure to heat and pressure in the Earth's crust. However, there are several types, such as hydrogen fuel (for automotive uses), ethanol, jet fuel and biodiesel which are all categorized as a liquid fuel.
The engine are classified based on combustion (ignition), fuel used, cooling, application and constructions. Based on the combustion type : 1. External combustionengines and 2. Internal combustion engines. Based on fuel used : 1. Diesel engines, 2. Petrol engines, 3. CNG engines and LPG engines. Based on cooling system : 1. Air cooled engines and 2. Liquid cooled engines. Based on applications : 1. Statinary engine 2.