Patent ID: 6810725
Filing Date: 2004-11-02
Classification: F02M,G01F

Abstract:
An exhaust gas recirculation (EGR) measurement device for recirculating at least a portion of exhaust gas of an internal combustion engine, said at least a portion of exhaust gas flowing in said EGR system in a forward direction to an intake of the internal combustion engine, said EGR system comprising:an exhaust gas inlet section having a substantially cylindrical shape; a convergent cone section connected to said exhaust gas inlet section, said convergent cone section including a cone inlet, a throat portion, and a cone outlet that is radially smaller than said cone inlet; a diffuser section connected to said cone outlet, said diffuser section including a diffuser inlet, a divergent conical portion, and a diffuser outlet that is radially larger than said diffuser inlet; and a means for providing accurate measurement of exhaust gas flow in said EGR system when said exhaust gas flows in a reverse direction that is opposite to said forward direction.