Patent ID: 7814746

Claim:
An exhaust device for a diesel engine, that supplies liquid fuel ( 6 ) from a supply source ( 5 ) of the liquid fuel ( 6 ) to a gas generator ( 3 ) which converts the liquid fuel ( 6 ) to flammable gas ( 7 ) and from which a flammable-gas supply passage ( 8 ) is conducted, the flammable-gas supply passage ( 8 ) having a flammable-gas outlet ( 9 ) communicated with an exhaust-gas route ( 1 ) upstream of a diesel-particulate-filter ( 2 ), the flammable gas ( 7 ) flowed out of the flammable-gas outlet ( 9 ) being burnt in exhaust gas ( 10 ) to generate combustion heat which can burn fine particles of the exhaust gas ( 10 ) remaining at the filter ( 2 ), wherein a case ( 11 ) for containing the filter ( 2 ) accommodates at least part of the gas generator ( 3 ), when providing the gas generator ( 3 ) with a catalyst chamber ( 51 ), within which a catalyst ( 51 a ) is accommodated, a heat-conduction plate ( 52 ) is arranged at an upper portion of the catalyst chamber ( 51 ) and a fuel-passing gap ( 53 ) is formed along an upper surface of the heat-conduction plate ( 52 ), the fuel-passing gap ( 53 ) being supplied with the liquid fuel ( 6 ) and with the air ( 44 ) and having a peripheral edge opened to provide a fuel outlet ( 54 ) to the catalyst chamber ( 51 ), catalytic combustion heat generated within the catalyst chamber ( 15 ) is conducted through the heat-conduction plate ( 52 ) to the fuel-passing gap ( 53 ), and the heat conduction-plate ( 52 ) has a mid portion from which an exothermic portion ( 45 a ) of a glow plug ( 45 ) projects downwards, and a metal guide plate ( 56 ) is arranged below the heat-conduction plate ( 52 ), the guide plate ( 56 ) being downwardly inclined from a peripheral edge portion ( 56 a ) underneath the fuel outlet ( 54 ) to below an exothermic portion ( 45 a ) of the glow plug ( 45 ), thereby receiving the liquid fuel ( 6 ) flowed out of the fuel outlet ( 54 ) by the peripheral edge portion ( 56 a ) of the guide plate ( 56 ) to guide it by the guide plate ( 56 ) so as to approach the exothermic portion ( 45 a ) of the glow plug ( 45 ).