The four stroke engine is divided into three basic parts the intake stroke, compression stroke, combustion stroke and the exhaust stroke which all lead to the ability of the engine to get the car into motion and allow humans the ability to drive automobiles. The factors, which affect the automobiles ability to move fluently, are the concentrations, temperature, surface area and a catalyst, which are all present in order to have a smoothly running car. …showed first 75 words of 303 total…

…showed last 75 words of 303 total…plug emits a spark to ignite the gasoline. The gasoline charge in the cylinder explodes, driving the piston down. Once the piston hits the bottom of its stroke, the exhaust valve opens and the exhaust leaves the cylinder to go out the tail pipe and the entire process is repeated thousands of time a minute. The exhaust pipe gives off mainly carbon dioxide, carbon monoxide, nitrogen oxides, and unburned hydrocarbons into the atmosphere. ------------------------------------------------------------------------ **Bibliography**