Granted Patent B2

US 7,040,084 · App. 10/735,599 · Granted May 9, 2006

Abstract

Claims (22)

1. An engine control system in a vehicle comprising:

a diesel engine in the vehicle;

a diesel fuel tank for supplying fuel to the diesel engine;

a gasoline tank in the vehicle;

a reformer for providing partial oxidation products from gasoline contained in said gasoline tank;

a NOx trap coupled to the exhaust of said diesel engine.

2. The engine control system of claim 1 wherein said NOx trap includes a three-way catalyst.

3. The engine control system of claim 1 wherein said NOx trap is regenerated by said partial oxidation products.

4. The engine control system of claim 1 wherein said partial oxidation products include carbon monoxide, hydrogen, or nitrogen.

5. A method of controlling a diesel engine comprising:

providing a diesel fuel tank;

providing a gasoline fuel tank;

providing a gasoline reformer;

providing a NOx trap;

generating partial oxidation products using said gasoline reformer; and

regenerating said NOx trap with said partial oxidation products.

6. A method of controlling a diesel engine comprising:

supplying gasoline to a partial oxidation reformer to generate reformate; and

introducing the reformate into the diesel engine.

7. The method of claim 6 where in the reformate comprises hydrogen.

8. The method of claim 6 wherein the reformate comprises carbon monoxide.

9. The method of claim 6 wherein the reformate comprises hydrocarbons.

Assignments (12)