Enjinverplasing: Verskil tussen weergawes

'''Enjinverplasing''' word gedefinieer as die totale [[volume]] lug/brandstofmengsel wat 'n [[enjin]] kan insuig tydens een volledige enjinsiklus; dit word normaalweg in [[kubieke sentimeter]] of [[liter]] aangegee. In 'n [[suierenjin]] is hierdie die volume wat ''gevee'' word soos die [[suier]] vanaf die ''boonste middelpunt'' tot die ''onderste middelpunt'' beweeg.

 

In 'n standaard suierenjin ('n [[Otto-siklus|Otto-]] of [[Dieselenjin|Diesel]]siklus enjin), word verplasing bereken deur die aantal silinders in die enjin met die oppervlakte van 'n suierkop en die lengte van die [[enjinslag|slag]]. Met ronde suiers kan die verplasing vanaf die deursnee van die silinderholte en die slag bereken word met die volgende formule:

 

 

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In many nations levels of [[tax]]ation on [[automobile]]s have been based on engine displacement, rather than on power output or vehicle weight. Displacement is easy to identify and difficult to modify whereas power output must be tested. This has encouraged the development of other methods to increase engine power.

 

[[Rotary Engines]], due to the amount of power and emmissions they create for their displacement, are generally taxed as 1.5 times their actual physical displacment (1.3 litres becomes 2.0, 2.0 becomes 3.0), although actual power outputs are far greater (the 1.3 litre 13B can produce power comparable to a 3.0 V6, and the 2.0 litre 20B can produce power comparable to a 4.0L V8). As such, racing regulations actually use a much higher conversion factor.

 

* [[Bulgaria]]: a special tax on non-European cars over 2.8&nbsp;L, later amended to over 3.0&nbsp;L

* [[Belgium]] and [[Portugal]] have a proportional tax including reference to displacement

* [[Taiwan]]: under 500 cc, 500~600 cc, 601~1200 cc, 1201~1800cc, etc (increments of 600 cc up to 8400 cc, where generally the price difference is greater from one range to the next).

 

Once [[V8]] engines became expected on large American cars in the late [[1950s]], and continuing to the [[oil crisis]] in the [[1970s]], there was an engine displacement race in the industry. Firms would put badges on the fenders of cars giving the displacement in cubic inches. This was also a sort of trademark as well. There's a famous [[Beach Boys]] song, "409", which refers to any full-size Chevrolet which had an engine displacement, in cubic inches, of that amount, regardless of trim level. This number was not the ''model number'' of the car.

 

With the oil shocks of the 1970s, American firms started selling cars with smaller engines. The [[Chevrolet Vega]] was initially touted as having an engine of 1998 "cc" (cubic centimetres), given in metric because it equates to 122 cubic inches, which would have been considered laughable to declare in the American market. This also differs from the European convention of two significant figures, which was in the U.S. European car models usually have a number of three digits. In this instance, the numbers are considered trademarks. These two factors in the world marketplace contributed to American cars now getting labelled in the European manner. Engines like that of the Vega would now be called 2.0 (being litres).

 

*1 L ~ 61 inch&sup3;

*1 inch&sup3; ~ 16 cm&sup3;

However, modern electronically-controlled engines these days are much more efficient, and the cars they are fitted in are lighter, so the difference in performance is not as great as might otherwise be supposed. -->

 

* [[kompressieverhouding]]

* [[enjinverstelling]]

* [[veranderlike verplasing]]

 

* [http://www.nightrider.com/biketech/calc_displacement.htm Bereken verplasing]