METHOD TO REDUCE PRESSURE IN ENGINE INTAKE MANIFOLD (VERSIONS) Russian patent published in 2019 - IPC B60W30/18 F16H61/16 F02D41/08 

FIELD: transportation; engines.

SUBSTANCE: disclosed is a method of reducing pressure in the intake manifold of a vehicle engine. Electronic instructions execute first instructions stored in long-term memory to determine barometric pressure. Determining if barometric pressure of threshold pressure is lower. Determining actual total number of braking events. Transmission is shifted from the working gear to neutral transmission in response to the fact that the actual total number of braking events exceeds the threshold value, while the barometric pressure is less than the threshold pressure. Also disclosed is a method of reducing pressure in the intake manifold of a vehicle engine.

EFFECT: improved operation of vehicle vacuum action systems; used approach may not lead to increase in fuel consumption in most cases, since the approach used can be used only in selected operating conditions of the engine, which occur infrequently; used approach can improve degree of driver satisfaction due to reduction of probability of occurrence of sensation of firmness of brake pedal.

13 cl, 4 dwg