Patent ID: 7610751

Claim:
A power generation system, comprising: a diesel engine, an exhaust manifold, a turbocharger, and an exhaust line configured whereby the engine is operational to produce exhaust that is released into the exhaust manifold, passes through the turbocharger, and then into the exhaust line; a first fuel injector configured to inject fuel into the exhaust manifold upstream of the turbocharger; a fuel reformer and a LNT configured within the exhaust line, in that order, the LNT being adapted to adsorb and store NOx under lean exhaust conditions and to reduce the stored NOx and regenerate under rich exhaust conditions; and a controller adapted to actuate the first fuel injector in order to initiate regeneration of the LNT to remove accumulated NOx; further comprising a second fuel injector configured to inject fuel into the exhaust line downstream of the turbocharger but upstream of the fuel reformer; wherein the controller is configured to time the fuel injections from the first and second fuel injectors whereby the majority of the fuel injected with the first fuel injector during the LNT regeneration mixes within the exhaust line with fuel injected with the second fuel injector to form a rich mixture within the fuel reformer, whereby the fuel reformer forms reformate that regenerates the LNT.