Patent ID: 6626154
Filing Date: 2003-09-30
Classification: F02B,F02D

Abstract:
An internal combustion engine comprising a cylinder block defining at least one cylinder bore, a piston reciprocating within the cylinder bore, a cylinder head closing an end of the cylinder bore to define a combustion chamber together with the cylinder bore and the piston, an air induction system arranged to introduce air to the combustion chamber, the air induction system including an air intake passage, a throttle valve moveably disposed within the air intake passage for admitting the air in proportion to an opening degree thereof, a first sensor arranged to sense the opening degree so as to send out an opening degree signal, a fuel injector arranged to spray fuel toward the combustion chamber, a control unit configured to determine an amount of the fuel at least based upon the opening degree signal, and a second sensor primarily arranged to sense an intake pressure of the air flowing through the air intake passage so as to send out an intake pressure signal, the second sensor positioned downstream the throttle valve, the control unit adjusting the amount of the fuel based upon a reference signal corresponding to an atmospheric pressure, and the control unit including a non-volatile memory for storing the intake pressure signal as the reference signal, the control unit storing the intake pressure signal when the control unit starts operating and the piston is not moving at a speed equal to or above that necessary to start the engine.