I want a complete information of automobile solenoid valve used in heavy engines for mixing the fule and air?

do you mean a solenoid enriching vale if so . by temptur sencer an o2 sencer an a COMPUTER to send message to enriching cyloned to lean up or richen up

ALL injected cars have air/fuel adjustments done by an IDLE AIR CONTROL VALVE. It has other names, but is part of the throttle body one way or another. It gets commands from the onboard computer and adds and subtracts air to get the optimum 14.7:1 stoichometric ratio. WHen it is DIRTY from engine oil sludge, it stops working somewhat. Fuel economy and power drop, and O2 sensors and converters get clogged up with carbon. It is VERY simple to keep a modern engine running best by keeping the IAC and T body CLEANED to showrrom! On Ford and some other engines the IAC valve is easily removed for cleaning with cleaner sprays. SEA FOAM works very well at dissolving the coke and sludge that accumulate there. The best protection to keep this vital sensors clean is by using ONLY synthetic engine oils that make NO sludge or give off NO vapors that are acidic and toxic to them. WHAT KIND OF CAR DO YOU HAVE?????

There is no such part. The vacuum in the intake manifold as well as the swirling affect the air mixture makes in transit is what mixes the mixture. Whatever it is you are seeking info on needs a better explanation.