CONTROLLING AND OPERATING HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINES

• US 20050121009A1
• Filed: 05/30/2003
• Published: 06/09/2005
• Est. Priority Date: 05/30/2003
• Status: Active Grant

• Current Assignee: Lawrence Livermore National Security LLC (Government of the United States of America)
• Original Assignee: Regents of the University of California (University of California)
• Inventors: Flowers, Daniel L.
• Granted Patent: US 6,923,167 B2
• Time in Patent Office: Days
• US Class Current: 123/568.150
• CPC Class Codes: F02B 1/12 with compression ignition with fuel-air charge ignited by compression ignition of an additional fuel F02B7/00
• CPC Class Codes: F02B 29/0412 Multiple heat exchangers arranged in parallel or in series
• CPC Class Codes: F02D 41/3035 a mode being the premixed charge compression-ignition mode
• CPC Class Codes: F02M 26/05 High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
• CPC Class Codes: F02M 26/16 with EGR valves located at or near the connection to the exhaust system
• CPC Class Codes: F02M 26/36 with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
• CPC Class Codes: F02M 31/18 to vaporise fuel
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A Homogeneous Charge Compression Ignition (HCCI) engine system includes an engine that produces exhaust gas. A vaporization means vaporizes fuel for the engine an air induction means provides air for the engine. An exhaust gas recirculation means recirculates the exhaust gas. A blending means blends the vaporized fuel, the exhaust gas, and the air. An induction means inducts the blended vaporized fuel, exhaust gas, and air into the engine. A control means controls the blending of the vaporized fuel, the exhaust gas, and the air and for controls the inducting the blended vaporized fuel, exhaust gas, and air into the engine.

Claims

1. A homogeneous charge compression ignition engine system, comprising:

an engine that produces exhaust gas,

vaporization means for vaporizing fuel for said engine,

air induction means for providing air for said engine,

exhaust gas recirculation means for recirculating said exhaust gas,

first blending means for blending said vaporized fuel with said exhaust gas,

second blending means for blending said vaporized fuel and said exhaust gas with said air,

induction means for inducting said blended vaporized fuel, exhaust gas, and air into said engine, and

control means for controlling said blending of said vaporized fuel, said exhaust gas, and said air and for controlling said inducting said blended vaporized fuel, exhaust gas, and air into said engine.

2. The homogeneous charge compression ignition engine system of claim 1, wherein said air induction means for providing air for said engine comprises a compressor.

3. The homogeneous charge compression ignition engine system of claim 1, wherein said air induction means for providing air for said engine comprises a turbine.

4. The homogeneous charge compression ignition engine system of claim 1, wherein said air induction means for providing air for said engine comprises a supercharger.

5. The homogeneous charge compression ignition engine system of claim 1, wherein said air induction means for providing air for said engine comprises a turbocharger.

6. The homogeneous charge compression ignition engine system of claim 1, wherein said air induction means for providing air for said engine includes an intercooler.

7. The homogeneous charge compression ignition engine system of claim 1, wherein said induction means for inducting said blended vaporized fuel, exhaust gas, and air into said engine includes an intercooler.

8. The homogeneous charge compression ignition engine system of claim 1 including a catalyst for treatment of said exhaust gas.

9. A homogeneous charge compression ignition engine system, comprising:

an engine that produces exhaust gas,

an injector that vaporizes fuel for said engine,

an air induction means for providing air for said engine,

exhaust gas recirculation means for recirculating said exhaust gas,

means for mixing said exhaust gas with said vaporized fuel,

means for mixing said air and said mixed exhaust gas and said vaporized fuel and inducting said mixed exhaust gas, said vaporized fuel, and said air into said engine, and

control means for controlling the amount of said mixed exhaust gas, said vaporized fuel, and said air that is inducted into said engine.

10. The homogeneous charge compression ignition engine system of claim 9, wherein said air induction means for providing air for said engine comprises a compressor.

11. The homogeneous charge compression ignition engine system of claim 9, wherein said air induction means for providing air for said engine comprises a turbine.

12. The homogeneous charge compression ignition engine system of claim 9, wherein said air induction means for providing air for said engine comprises a supercharger.

13. The homogeneous charge compression ignition engine system of claim 9, wherein said air induction means for providing air for said engine comprises a turbocharger.

14. The homogeneous charge compression ignition engine system of claim 9, wherein said air induction means for providing air for said engine includes an intercooler.

15. The homogeneous charge compression ignition engine system of claim 9, wherein said exhaust gas recirculation means includes an intercooler.

16. The homogeneous charge compression ignition engine system of claim 9 including a catalyst for treatment of said exhaust gas.