2.18.4. Injection valves
Valves inject fuel with breaks: for each turn of the crankshaft a half of fuel, necessary for one step, is injected.
The fuel injected by the valve has the cone form. After injection the valve is hermetically closed. Untight valves are the reason of bad start of the hot engine.
Faulty valves are the reason of spontaneous operation of the engine after switching off of ignition that will lead to an exit it out of operation.