INTAKE DEVICE FOR INTERNAL COMBUSTION ENGINE WITH SUPERCHARGER Russian patent published in 2015 - IPC F02M25/07 F02B37/16 F02D23/00 

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. The intake device is intended for internal combustion engines (1) with supercharger. The intake device contains the inlet channel (10) fitted with air flowmeter (12), the throttle valve (13) and the recirculation valve (17). The supercharger compressor (5) is located between the throttle valve (13) and the airflowmeter (12). The recirculation valve (17) is implemented with a possibility of pressure relief from the area downstream the compressor (5) into the area upstream the compressor (5) during closing of the throttle valve (13). The exhaust gas recirculation channel (16) (EGR) of the engine is connected to the inlet channel (10) with the area upstream the compressor (5). The capacity (V₁) of the inlet channel (10) from a flowmeter (12) air before connection of the inlet channel and the EGR channel (16), the capacity (V₂) of the inlet channel from the compressor (5) to the throttle valve (13), and the maximum pressure (P_b) of turbocharge in operating mode in which EGR gas is injected, are mutually related by the following mathematical expression: V₁>V₂×(P_b-P₁/P₁)×(P₁/P_b)^k-1/k, where P₁ is the pressure upstream the compressor (5), and k is the specific heat of gas mix from of air and EGR gas downstream the compressor (5). The version of implementation of the intake device is described.

EFFECT: technical result consists in prevention of the back flow of gas mix of air and EGR gas into an air flowmeter.

5 cl, 2 dwg