Patent ID: 9677484
Date: 2017-06-13
CPC Classifications: F01N,F02B,F02D,F02M,Y02T

Claim:
1. A fuel reformer for an internal combustion engine comprising: a main fuel injector injecting a main fuel that is supplied to an internal combustion engine; a throttle valve adjusting an intake air amount for the engine; an EGR passage returning a portion of an exhaust gas from an exhaust passage of the engine to an air-intake passage as an EGR gas; an EGR valve adjusting a flow amount of the EGR gas; a reforming-fuel injector injecting a reforming-fuel into the EGR passage; a fuel reformer catalyst disposed in the EGR passage and reforming the reforming-fuel injected by the reforming-fuel injector; and a catalyst recovery controller configured to execute a catalyst recovery control that includes (i) performing a fuel cut, which stops an injection of the main fuel and the reforming-fuel, and (ii) maintaining the EGR valve and the throttle valve in a valve open state to supply additional air to the fuel reformer catalyst and recover a fuel reforming capacity of the fuel reformer catalyst.