what is this then. On planet earth its called a fuel injector and if you wish to disagree that an EFI engine does not have them then please stop hitting the crack pipe.
NOW to the question. You are telling me that in every otto cycle 4 stroke petrol engine fuel and air mix in the inlet manifold and get pulled into the combustion chamber on inlet stroke - YES
HOW do you think fuel is added to the air when you have a PCM, ECM, ECU, MCU (whatever name you think is appropriate) according to the finishing sentence of your long but strange paragraph.
Its added from this injector its actually a pintle solenoid with pressurised fuel on its back which is supplied with positive current on side and grounded in little pulses from the PCM, ECM, ECU, MCU (take your pick again) depending on the engine load which is detected by a number of inputs of the very basic are MAP signal for speed density based system or MAF for air measurement systems.
The injector is the point where fuel is introduced into the inlet manifold.
For your second question of diesel operating principle. Diesel fuel oil is pressurized via a hydraulic pump and fed via injector nozzles directly into the combustion chamber uner very high pressure at the power stroke.
NOW - if you have an indirect injection engine the fuel is injected into a precombustion chamber from where the fireball expands and forces the piston downwards, if its a direct injected engine, the fuel is injected into a bowl depressed into the piston itself, the manifold is a true dry manifold with no control of air inlet, and engine output and revs solely controlled by metering the amount of fuel being injected into the engine
Please - go read something on how an otto cycle engine works with a generic controlled electronic fuel injection control system. While there also look up K-Jetronic mechanical fuel injection (like you see on older mercedes engines)
Its one thing to ask for correction if you dont know, but to blatantly spew out complete nonsense is another.
