Engine system with reformer

Abstract

An engine system includes a reformer for driving an engine by supplying the engine with a reformed fuel which the reformer reforms from a pre-reformed fuel. The reformer includes a reforming catalyst for reforming the pre-reformed fuel by a water vapor reforming reaction. The engine system also includes a pre-reformed fuel supply adjustment unit for supplying the pre-reformed fuel to the reformer. The reformer includes an extremity portion provided in an engine cylinder. The pre-reformed fuel supply adjustment unit supplies the pre-reformed fuel to the reformer during a suction stroke of the engine, and the reformed fuel is directly supplied from the reformer into the engine cylinder.

What is claimed is: 
     
         1 . An engine system comprising:
 a reformer configured to drive an engine by supplying the engine with a reformed fuel, said reformer being configured to reform a pre-reformed fuel into the reformed fuel:   a forming catalyst located in the reformer and configured to reform the pre-reformed fuel by a water vapor reforming reaction; and   a pre-reformed fuel supply adjustment unit configured to supply the pre-reformed fuel to the reformer,   wherein the reformer includes an extremity portion provided in an engine cylinder,   wherein the pre-reformed fuel supply adjustment unit is configured to supply the pre-reformed fuel to the reformer during a suction stroke of the engine, and   wherein the reformer is configured to directly supply the reformed fuel from the reformer into the engine cylinder.   
     
     
         2 . The engine system according to  claim 1 ,
 wherein the pre-reformed fuel supply adjustment unit includes an injector provided to the reformer.   
     
     
         3 . The engine system according to  claim 1 ,
 wherein the pre-reformed fuel is supplied from the injector to the reformer before a suction valve opens during the suction stroke of the engine.