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Title: High efficiency stoichiometric internal combustion engine system

Abstract

A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

Inventors:
 [1];  [2]
  1. (Waterloo, IA)
  2. (Cedar Falls, IA)
Publication Date:
Research Org.:
NETL (National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
988051
Patent Number(s):
7,540,279
Application Number:
11/748,861; TRN: US201018%%222
Assignee:
Deere & Comapny (Moline, IL) NETL
DOE Contract Number:  
FC26-05NT42416
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 33 ADVANCED PROPULSION SYSTEMS; AIR FLOW; BLOWERS; CATALYSTS; COMBUSTION CHAMBERS; COMPRESSION; EFFICIENCY; ENGINES; FUEL-AIR RATIO; IGNITION; INTERNAL COMBUSTION ENGINES; MOTORS; NITROGEN; OXIDES; POWER SYSTEMS

Citation Formats

Winsor, Richard Edward, and Chase, Scott Allen. High efficiency stoichiometric internal combustion engine system. United States: N. p., 2009. Web.
Winsor, Richard Edward, & Chase, Scott Allen. High efficiency stoichiometric internal combustion engine system. United States.
Winsor, Richard Edward, and Chase, Scott Allen. Tue . "High efficiency stoichiometric internal combustion engine system". United States. https://www.osti.gov/servlets/purl/988051.
@article{osti_988051,
title = {High efficiency stoichiometric internal combustion engine system},
author = {Winsor, Richard Edward and Chase, Scott Allen},
abstractNote = {A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 02 00:00:00 EDT 2009},
month = {Tue Jun 02 00:00:00 EDT 2009}
}

Patent:

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