초록 ▼

A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NOx emissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel (an

A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NOx emissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel (and other lean-burn) engines to meet new, lower emission standards without having to carry separate fuel and reductant tanks.

대표청구항 ▼

We claim: 1. A method to deliver a stripped ethanol reductant from E-diesel fuel to the exhaust of lean-burn engines and having a selective catalytic reducing converter in an exhaust system comprising: delivering an E-diesel fuel to a distillation chamber where a portion of the included reductant e

We claim: 1. A method to deliver a stripped ethanol reductant from E-diesel fuel to the exhaust of lean-burn engines and having a selective catalytic reducing converter in an exhaust system comprising: delivering an E-diesel fuel to a distillation chamber where a portion of the included reductant ethanol is distilled out from the fuel under reduced pressure and subsequently delivered to a small storage tank; pressurization of the distilled reductant via fuel pump and a return-style regulator; injecting stripped reductant to said exhaust via standard fuel injector that is cooled via a water loop to prevent thermal damage to the injector. 2. A method according to claim 1 wherein the reductant is delivered to the exhaust in gaseous form. 3. A method according to claim 1 wherein the lean-burn engine is a diesel engine.