Patent ID: 6055967
Filing Date: 2000-05-02
Classification: F02B

Abstract:
A supercharger arrangement for a vehicle engine comprising:a vehicle engine;a supercharger having a main body with an inlet, an outlet and an intermediate opening for compressing an intake air introduced therein from the inlet, with an upstream intake air pipe extending to the inlet of the supercharger to introduce the intake air in the supercharger and a downstream intake air pipe extending to the engine from the outlet of the supercharger to supply a compressed air to the engine;a first bypass pipe extending from the intermediate opening of the main body of the supercharger to the upstream intake air pipe such that part of the intake air compressed to a certain extent in the supercharger returns to the inlet of the supercharger;a first valve connected to the first bypass pipe for controlling a flow rate of the air returning to the inlet of the supercharger through the first bypass pipe;a second bypass pipe extending from the downstream intake air pipe to the upstream intake air pipe so that part of the intake air discharged from the outlet of the supercharger can be returned to the inlet of the supercharger; anda second valve connected to the second bypass pipe for controlling a flow rate of the air returning to the inlet of the supercharger through the second bypass pipe.