摘要:
The secondary air supply system of an internal combustion engine is provided with two reed valves through which atmospheric air is induced to the exhaust system of the engine. The two reed valves are selectively maintained operable under low and high engine speed operating conditions, respectively.
摘要:
An internal combustion engine employing a siamesed exhaust port arrangement is equipped with a secondary air supply system which is arranged to induct atmospheric air into the exhaust system of the engine in response to the pressure pulsation in the exhaust port. At least two air injection nozzles are disposed open to portions of the exhaust port where they are not affected by the interaction of the pressure pulsations caused by the strokes of two adjacent engine cylinders.
摘要:
A knock level control apparatus for an internal combustion engine, which comprises knock voltage generating means for generating a knock voltage representing a maximum level of frequency components of knock sounds emitted from the internal combustion engine, knock level discriminating means for producing a control signal by comparing the knock voltage with a function voltage, and ignition timing control means for controlling the ignition timing of the internal combustion engine in accordance with the control voltage.