Traditional engines spark-ignition engine versus alternatives electric motor

There are lots of differences between traditional engines and alternatives. For example, most of petrol car and electric vehicles have lots of differences. The author will talk about the difference between spark-ignition engine and electric motor (advantages and disadvantages) briefly, and this essay will explain them in a few parts carefully. People will consider of the efficiency of cars, fuel source and other different properties that spark-ignition engine and electric motor have. In efficiency, the author will talk about how to calculate the efficiency of Spark-ignition engine and how to calculate the efficiency of electric motor. in fuel source and emission, the author also will analysis the benefits that electric can do and the Spark-ignition engine cannot do, the environmental problems health problems and resource limited are all important. This essay will explain the difference between Spark-ignition engine and electric motor deeper in the following page.