Combustion process for internal combustion engine

• US 4,756,285 A
• Filed: 06/08/1987
• Issued: 07/12/1988
• Est. Priority Date: 02/22/1985
• Status: Expired due to Term

• Current Assignee: FEV Forschungsgesellschaft Fur Energietechnik und Verbrennungsmotoren mbH
• Original Assignee: FEV Forschungsgesellschaft Fur Energietechnik und Verbrennungsmotoren mbH
• Inventors: Pischinger, Franz
• Primary Examiner(s): Cox, Ronald B.
• Application Number:
  US07/059,858
• Time in Patent Office: 400 Days
• Field of Search: 123/257, 123/277, 123/274, 123/489, 123/440, 123/478, 123/568, 60/601
• US Class Current: 123/274
• CPC Class Codes: F02B 19/1052 controlling, e.g. varying fuel-air ratio, quantity of charge
• CPC Class Codes: F02B 29/0412 Multiple heat exchangers arranged in parallel or in series
• CPC Class Codes: F02M 26/08 for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
• CPC Class Codes: F02M 26/20 Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
• CPC Class Codes: F02M 26/23 Layout, e.g. schematics
• CPC Class Codes: F02M 26/36 with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

For a combustion procedure for internal combustion engines, in which a fuair mixture with back-fed exhaust gas is introduced into a combustion chamber, a highly-combustible fuel-air mixture without back-fed exhaust gas in introduced into at least one precombustion chamber, which is connected by means of at least one opening with the combustion chamber.

Claims

1. A combustion process for an internal combustion engine having a main combustion chamber and at least one precombustion chamber connected with said combustion chamber by at least one opening, introducing a well ignitable fuel air mixture into said precombustion chamber, introducing, independently of the first-mentioned introducing step, fuel, air and recirculated exhaust gas directly into said main combustion chamber for producing an admixture therein, and igniting said admixture, providing a 3-way catalyst connected to the flow of exhaust gas from said combustion chamber, and measuring the oxygen content of the exhaust gas entering said catalyst for regulating the ratio of fuel and air entering said combustion and pre-combustion chambers in a nearly stoichiometric range, comprising the further step of supercharging, said supercharging being carried out by providing two separate exhaust gas turbo-superchargers and directing two partial flows of exhaust gas from said combustion chamber through said superchargers.