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A rev limiter is a device fitted in modern vehicles that have internal combustion engines. They are intended to protect an engine by restricting its maximum rotational speed, measured in revolutions per minute (RPM). Rev limiters are pre-set by the engine manufacturer. There are also aftermarket units where a separate controller is installed ...
However, if a vehicle doesn’t come equipped with such features, then aftermarket forms of launch control can be purchased and installed. A common form of aftermarket launch control is commonly known as two-step rev limiting. A two-step rev limiter is a module that regulates the engines rpms for a controlled launch and optimal power settings.
Artist rendering of a NASCAR restrictor plate. A restrictor plate or air restrictor is a device installed at the intake of an engine to limit its power. This kind of system is occasionally used in road vehicles (e.g., motorcycles) for insurance purposes, but mainly in automobile racing, to limit top speed to provide equal level of competition, and to lower costs; insurance purposes have also ...
Rev-limiter and implementation [ edit ] Most modern cars have computer systems that prevent the engine from straying too far into the redline by cutting fuel flow through the fuel injectors / fuel rail (in a direct-injected engine) / carburetor or by disabling the ignition system until the engine drops to a safer operating speed.
The 2006 season saw the highest rev limits in the history of Formula One, at well over 20,000 rpm; before a 19,000 rpm mandatory rev limiter was implemented for all competitors in 2007. Cosworth was able to achieve just over 20,000 rpm with their V8, [60] and Renault around 20,500 rpm. Honda did the same; albeit only on the dynamometer.
The Summary. A report from the U.S. surgeon general suggested that labels on alcoholic drinks should warn about cancer risk. Doctors expressed their agreement.
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