3.6.1. Breakthrough at the moment of a start of motion

At the moment of a start of motion the limiting case of breakthrough — a failure more often takes place. The most unpleasant feelings are connected with delay of response of the engine on pressing of a pedal of an accelerator. Sometimes engine thus even глохнет. Breakthrough arises at the moment of the beginning of opening of a butterfly valve when by a signal of the sensor of provision of a butterfly valve of EBU determines the transition moment from an idling mode on a loading mode and should increase amount of fuel submitted through nozzles. At insufficient pressure in a fuel stage, even at increase in duration of injection, fuel for a smooth troganiye from a place does not suffice. A technique of check of pressure of fuel see in subsection «Check of pressure of fuel in a power supply system».

In addition breakthrough can arise and owing to malfunction of an electromechanical part of throttle knot and butterfly valve pollution by deposits from karterny gases.