A fuel controlling apparatus includes: a fuel injector, the fuel injector being controlled on a basis of a throttle opening degree and an engine speed without measuring a quantity of an intake air; and a carburetor that supplies the fuel to the engine using a negative pressure produced by the intake...http://www.google.ca/patents/US6505583?utm_source=gb-gplus-sharePatent US6505583 - Fuel controlling apparatus for internal combustion engine
