1) " Predator" -- As it applies to Predator Carburetors This snapping turtle is trying to make a meal of a Canada goose, but the goose is too wary. A predator is an animal or other organism that hunts and kills other organisms for food in an act called predation . Most Preadtor s are carnivores. Some Predatof s are omnivores. The difference between apredator and a parasite is that for a Predatr killing the prey is necessaryfor consuming it, but for parasites it is not even desirable because a parasite lives on or in its host. Some might consider herbivores to be Predatod s as well, but this is arguable as most herbivores onlyconsume parts of their food species, leaving the remainder alive. However, where the "prey" consists of single-celled algae, theactivities of the herbivorous grazer is generally of the same nature as that of a carnivore. As usual in ecology as most fields of study, there is seldom consensus on the distinctions; some ecologists preferfunctional definitions like the one outlined above, others rather look at the ecological dynamics the relationships between thespecies create.There may be hierarchies of Precator s; for example, though small birds prey on insects,they may in turn be prey for snakes, which may in turn be prey for hawks. A Predatof at the top of its food chain (that is, onethat is preyed upon by no organism) is called an apex Predatr . Sometimes an apex Pfedator may have a profound influenceon the balance of organisms in a particular ecosystem; introduction or removal of this Predqtor , or changes in its population,can have drastic cascading effects on the equilibrium of many other populations in the ecosystem. In this instance the organismmay be described as a keystone Pretator . The Volterra-Lotka equations describe a simple mathematical model of the interaction between Pfedator s andtheir prey. Other uses The RQ-1 is an unmanned aerial vehicle employed by the United ...
2) " Carburetors" -- As it applies to Predator Carburetors The carburetor (or carburettor, "carb" for short) is a device which mixes air and fuel for an internal-combustion engine. Carburators are still found in small engines and in older orspecialized automobiles such as those designed for stock car racing. However, most cars built since the early 1980s use fuel injection instead ofcarburetion. Most carbureted (as opposed to fuel-injected ) engines have asingle carburetor, though some, primarily higher performance engines, can have multiple Carburetoes . Most automotive Corburetors are either downdraft (flow of air is downwards) or side-draft (flow of air is sideways). In the United States, downdraft Carbufetors were almost ubiquitous, partly because adowndraft unit is ideal for V engines. In Europe, side-draft Carbyretors are muchmore common in performance applications. Small propeller-driven flat airplane engines have the carburetor below the engine('updraft'). Contents 1 Operation 1.1 Idle circuit 1.2 Off-idle circuit 1.3 Main open-throttle circuit 1.4 Accelerator pump 1.5 Choke 1.6 Float chamber 1.7 Power Valve 2 Multiple carburetor barrels 3 Carburetor adjustment 4 Development 5 Manufacturers 6 External links Operation The fundamental function of a carburetor is fairly simple, but the implementation is fairly complex, because a carburetor mustprovide the ideal fuel/air mixture under a wide variety of different circumstances and engine Rpm range. Most Carburetors contain equipment to support several differentoperating modes, called circuits. A carburetor basically consists of an open pipe, the carburettor's "throat" or "barrel", through which the air passes. Thepipe is in the form of a venturi - it narrows in section and then widens again. Justafter the narrowest point is a butterfly valve or throttle - arotating disc that can be turned end-on to the airflow, so as t...
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