Fuel injection system for internal combustion engine
This patent describes a fuel injection system for an internal combustion engine having an air flow meter provided in an intake passage for detecting an amount of intake air, engine load detecting means for detecting an engine load based upon a pressure at a portion downstream of a throttle valve in the intake passage or an opening of the throttle valve, and engine rpm detecting means. The fuel injection system comprises fuel injecting means, first calculating means for calculating an amount of fuel to be injected by the fuel injecting means based upon an output from the air flow meter under an engine operating condition where the amount of intake air is small, second calculating means for calculating an amount of fuel to be injected by the fuel injecting means based upon outputs from the engine load detecting means and the engine rpm detecting means under an engine operating condition where the amount of intake air is large, and correcting means for correcting the amount of fuel to be injected upon switchcover between the first and second calculating means in response to changes in the engine operating condition, whereby the difference between successive amounts of fuel to be injected is never large.
- Assignee:
- Mazda Motor Corp., Hiroshima
- Patent Number(s):
- US 4736725
- OSTI ID:
- 5071936
- Country of Publication:
- United States
- Language:
- English
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