Member Information
Get Connected
Reading/Career


Car-Insurance-Auto-Insurance.com

Post articles View all articles Print article

Automobile Engine


An engine is something that produces some effect from a given input. The origin of engineering was the working of engines.



An engine is something that produces some effect from a given input. The origin of engineering was the working of engines. There is an overlap in English between two meanings of the word "engineer": 'those who operate engines' and 'those who design and construct new items'
Usage of the term

In original usage, an engine was any sort of mechanical device. The term "gin" in cotton gin is a short form of this usage. Practically every device from the industrial revolution was referred to as an engine, and this is where the steam engine gained its name. This form of the term has recently come into use once again in computer science, where terms like "search engine", "3-D graphics game engine", "rendering engine" and "text-to-speech engine" are common. The earliest mechanical computing device was called the difference engine; Military devices such as catapults are referred to as siege engines.

In more recent usage, the term is typically used to describe devices that perform mechanical work, follow-ons to the original steam engine. In most cases the work is supplied by exerting a torque, which is used to operate other machinery, generate electricity, pump water or compress gas.

In the context of propulsion systems, an air breathing engine is one that uses atmospheric air to oxidise the fuel carried, rather than carrying an oxidiser, as in a rocket. Theoretically, this should result in a better specific impulse than for rocket engines.


Modern

The internal combustion engine was originally selected for the automobile due to its flexibility over a wide range of speeds. Also, the power developed for a given weight engine was reasonable; it could be produced by economical mass-production methods; and it used a readily available, moderately priced fuel--gasoline.

In today’s world, there has been a growing emphasis on the pollution producing features of automotive power systems. This has created new interest in alternate power sources and internal-combustion engine refinements that were not economically feasible in prior years. Although a few limited-production battery-powered electric vehicles have appeared from time to time, they have not proved to be competitive owing to costs and operating characteristics. In the twenty-first century the diesel engine has been increasing in popularity with automobile owners. However, the gasoline engine, with its new emission-control devices to improve emission performance, has not yet been challenged significantly.

The first half of the twentieth century saw a trend to increase engine power, particularly in the American models. Design changes incorporated all known methods of raising engine capacity, including increasing the pressure in the cylinders to improve efficiency, increasing the size of the engine, and increasing the speed at which power is generated. The higher forces and pressures created by these changes created engine vibration and size problems that led to stiffer, more compact engines with V and opposed cylinder layouts replacing longer straight-line arrangements. In passenger cars, V-8 layouts were adopted for all piston displacements greater than 250 cubic inches (4 litres).

Smaller cars brought about a return a to smaller engines, the four- and six-cylinder designs rated as low as 80 horsepower (60 kW), compared with the standard-size V-8 of large cylinder bore and relatively short piston stroke with power ratings in the range from 250 to 350 hp (190 to 260 kW).

The automobile motor had a bigger range, varying from 1-12 cylinders with corresponding differences in overall size, weight, piston displacement, and cylinder bores. Four cylinders and power ratings from 19 to 120 hp (14 to 90 kW) were followed in a majority of the models. Several three-cylinder, two-stroke-cycle models were built while most engines had straight or in-line cylinders. There were several V-type models and horizontally opposed two- and four-cylinder makes too. Overhead camshafts were frequently employed. The smaller engines were commonly air-cooled and located at the rear of the vehicle; compression ratios were relatively low. The 1970s and '80s saw an increased interest in improved fuel economy which brought in a return to smaller V-6 and four-cylinder layouts, with as many as five valves per cylinder to improve efficiency.


All text of this article available under the terms of the GNU Free Documentation License (see Copyrights for details).

  
Car Insurance Services   Show All articles
Search by Zip
  Enter Zip  search
Contact Car Insurance Services near you.
Firstname *
Lastname *
Email *
Phone *
Alt. Phone
Zip *
Brief reason to contact *
Los Angeles Car Insurance ServiceMIAMI-DADE Car Insurance ServiceCook Car Insurance Service
SAINT LOUIS Car Insurance ServiceHarris Car Insurance ServiceMaricopa Car Insurance Service
Orange Car Insurance ServiceSan Diego Car Insurance ServicePRINCE GEORGES Car Insurance Service
Kings Car Insurance ServiceDade Car Insurance ServiceQueens Car Insurance Service
Dallas Car Insurance ServiceWayne Car Insurance ServiceKing Car Insurance Service
San Bernardino Car Insurance ServiceSanta Clara Car Insurance ServiceDEKALB Car Insurance Service
Broward Car Insurance ServiceDU PAGE Car Insurance ServiceRiverside Car Insurance Service
New York Car Insurance ServicePhiladelphia Car Insurance ServiceMiddlesex Car Insurance Service
Tarrant Car Insurance ServiceAlameda Car Insurance ServiceSuffolk Car Insurance Service
Cuyahoga Car Insurance ServiceBexar Car Insurance ServiceClark Car Insurance Service
 
More information...
Auto Insurance For Less - 4 Things That Will Help
You can get high quality auto insurance for a lot less if you are shown a few things. Yes, affordable rates are not just for a few insiders who know certain tricks....
Insurance for Performance Cars
Driving a high performance car comes at a price. Insurance premiums for performance vehicles are generally a lot higher compared to smaller engine cars....
How Your Car Insurance Quote Is Calculated
Insurance companies place vehicles in different categories depending on their value and performance....
Where To Go For Car Insurance
The internet is slowly taking over our lives. It's capable of satisfying all of our consumer desires; with a simple click of the mouse you can book yourself a holiday...
Online Car Insurance
There are many resources for consumers to consider when shopping for automobile coverage and among the most popular is online car insurance...
Auto Insurance Comparisons - Find The Best Deal
You finally have it, the car of your dreams. The beautiful paint job, the spotlessly clean interior, perfectly tinted windows, and that new car smell are all yours as the dealer hands you the keys...
Buying New Car Insurance
One of the most important aspects of buying a modern vehicle is the process of buying new car insurance....
How to Compare Car Insurance Companies
Obtaining excellent auto coverage that is affordable requires the ability to compare car insurance rates while assessing the quality of the provider in the process. ...
Car Insurance Rates
Car insurance rates vary from company to company. They also vary according to the benefits that are included in your policy....
Lower Car Insurance Rates
You can't imagine how much cash you could be losing in your car insurance unless you already have this information. Yes, you too can get lower car insurance rates....

Contact Us | Site Map | RSS Feeds | Articles | Jobs | All Members | Popular Searches | Popular Questions