Integral device for forming and metering a mixture of air and fuel in an internal combustion engine fed by a multipoint injection system
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United States of America Patent
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May 15, 1990
Issued Date -
N/A
app pub date -
Jun 14, 1989
filing date -
Oct 30, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device comprises substantially an integral connection block for connection to an air manifold and to an engine wall; in said block there is provided a plurality of pairs of main air feed holes, one hole of each pair being controlled by a throttle valve; in the block there is also provided a series of supplementary idling air ducts the passage of which is controlled by a solenoid modulating valve housed in a suitable seat in the block. On the block there is also provided a series of seats for the injectors, and a pair of ducts for feeding fuel to the injectors and for its recirculation. Finally, on the block there are provided further seats for a fuel pressure regulator and for a pneumatic actuator arranged to control said throttle valves by way of a transmission.
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