1998 Progress Report: Reduced NOx/Hydrocarbon Emissions via Oxygen Enriched Lean Burn Engines

EPA Contract Number: 68D70021
Title: Reduced NOx/Hydrocarbon Emissions via Oxygen Enriched Lean Burn Engines
Investigators: Nemser, Stuart
Small Business: Compact Membrane Systems Inc.
EPA Contact:
Phase: I
Project Period: September 1, 1997 through March 1, 1998
Project Period Covered by this Report: September 1, 1997 through March 1, 1998
Project Amount: $70,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1997) RFA Text |  Recipients Lists
Research Category: SBIR - Air Pollution , Small Business Innovation Research (SBIR) , Air Quality and Air Toxics

Description:

Lean burn engines are a promising technique to reduce emissions while simultaneously increasing fuel efficiency. Lean air to fuel ratios (AFR) improve HC/CO oxidation while cooler temperatures reduce NOx formation. Compact Membrane Systems, Inc. (CMS) has shown that the use of oxygen enriched air (OEA) supplied by membrane modules is an excellent method to extend the lean burn limit in spark ignition engines. Successes in Phase I included:

    1. Fabricated 2.5-inch diameter by 9-inch length membrane modules which supplied 10 cfm of OEA.
    2. Extended the lean burn limit of test engine from 18:1 AFR to 22:1 with OEA.
    3. Successfully used engine vacuum to drive the membrane modules to supply an engine with sufficient OEA at idle and cruise speed.
    4. Demonstrated dual use technology with lean burn system for cold start and particulate emission reduction (with OEA) and EGR replacement (with nitrogen enriched air).
    5. Verified test data with engine modeling simulations.

In Phase II, CMS will customize and improve membrane fabrication for lean burn applications; test and analyze membrane system on a lean burn engine; test durability on membrane modules; and design a prototype for commercialization at the conclusion of the Phase II program.

Supplemental Keywords:

small business, SBIR, air emissions, engineering, chemistry, EPA., RFA, Scientific Discipline, Toxics, Air, Sustainable Industry/Business, air toxics, cleaner production/pollution prevention, Sustainable Environment, HAPS, VOCs, Technology for Sustainable Environment, mobile sources, New/Innovative technologies, Engineering, Engineering, Chemistry, & Physics, Environmental Engineering, Nox, Nitrogen Oxides, hydrocarbon, nitrogren oxides (NOx), engines, carbon monoxide (CO), carbon monoxide, spark engine, lean burn engine, hydrocarbons, engine, lean burn engines

Progress and Final Reports:

Original Abstract
  • Final
  • SBIR Phase II:

    Reduced NOx/Hydrocarbon Emissions via Oxygen Enriched Lean Burn Engines  | 1997 Progress Report  | Final Report