The Suspension System On A Car Explained

Written by Kevin Schappell

"Suspension," when discussing cars, refers torepparttar use of front and rear springs to suspend a vehicle's "sprung" weight. The springs used on today's cars and trucks are constructed in a variety of types, shapes, sizes, rates, and capacities. Types include leaf springs, coil springs, air springs, and torsion bars. These are used in sets of four for each vehicle, or they may be paired off in various combinations and are attached by several different mounting techniques. The suspension system also includes shocks and/or struts, and sway bars. Back inrepparttar 102760 earliest days of automobile development, when most ofrepparttar 102761 car's weight (includingrepparttar 102762 engine) was onrepparttar 102763 rear axle, steering was a simple matter of turning a tiller that pivotedrepparttar 102764 entire front axle. Whenrepparttar 102765 engine was moved torepparttar 102766 front ofrepparttar 102767 car, complex steering systems had to evolve. The modern automobile has come a long way sincerepparttar 102768 days when "being self-propelled" was enough to satisfyrepparttar 102769 car owner. Improvements in suspension and steering, increased strength and durability of components, and advances in tire design and construction have made large contributions to riding comfort and to safe driving. Cadillac allegedly producedrepparttar 102770 first American car to use a steering wheel instead of a tiller. Two ofrepparttar 102771 most common steering mechanisms arerepparttar 102772 "rack and pinion" andrepparttar 102773 standard (or recirculating-ball) systems that can be either manual or assisted by power. The rack and pinion was designed for sports cars and requires too much driver muscle at low speeds to be very useful in larger, heavier cars. However, power steering makes a heavy car respond easily torepparttar 102774 steering wheel, whether at highway speeds or inching into a narrow parking place, and it is normal equipment for large automobiles.

A Cars HVAC System

Written by Kevin Schappell

Not only do we depend on our cars to get us where we want to go, we also depend on them to get us there without discomfort. We expectrepparttar heater to keep us warm when it's cold outside, andrepparttar 102759 air conditioning system to keep us cool when it's hot. We get heat fromrepparttar 102760 heater core, sort of a secondary radiator, which is part ofrepparttar 102761 car's cooling system. We get air conditioning fromrepparttar 102762 car's elaborate air conditioning system. Despite its relatively small size,repparttar 102763 cooling system has to deal with an enormous amount of heat to protectrepparttar 102764 engine from friction andrepparttar 102765 heat of combustion. The cooling system has to remove about 6,000 BTU of heat per minute. This is a lot more heat than we need to heat a large home in cold weather. It's good to know that some of this heat can be put torepparttar 102766 useful purpose of keeping us warm. Air conditioning makes driving much more comfortable in hot weather. Your car's air conditioner cleans and dehumidifies (removes excess moisture),repparttar 102767 outside air entering your car. It also hasrepparttar 102768 task of keepingrepparttar 102769 air atrepparttar 102770 temperature you select. These are all big jobs. How do our cars keep our "riding environment"repparttar 102771 way we like it? Most people thinkrepparttar 102772 air conditioning system's job is to add "cold" air torepparttar 102773 interior ofrepparttar 102774 car. Actually, there is no such thing as "cold," just an absence of heat, or less heat than our bodies are comfortable with. The job ofrepparttar 102775 air conditioning system is really to “remove”repparttar 102776 heat that makes us uncomfortable, and returnsrepparttar 102777 air torepparttar 102778 car's interior in a "un-heated" condition. Air conditioning, or cooling, is really a process of removing heat from an object (like air). A compressor circulates a liquid refrigerant called Refrigerant-12 (we tend to call it "Freon," a trade name,repparttar 102779 way we call copy machines "Xerox" machines). The compressor movesrepparttar 102780 Refrigerant-12 from an evaporator, through a condenser and expansion valve, right back torepparttar 102781 evaporator. The evaporator is right in front of a fan that pullsrepparttar 102782 hot, humid air out ofrepparttar 102783 car's interior. The refrigerant makesrepparttar 102784 hot air's moisture condense into drops of water, removingrepparttar 102785 heat fromrepparttar 102786 air. Oncerepparttar 102787 water is removed,repparttar 102788 "cool" air is sent back intorepparttar 102789 car's interior. Aaaaaah! Much better. Newer cars have R-134 asrepparttar 102790 refrigerant, but work inrepparttar 102791 same way as R-12.

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