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1. WO2013103755 - EXHAUST SYSTEM AND METHOD FOR AN INTERNAL COMBUSTION ENGINE

Publication Number WO/2013/103755
Publication Date 11.07.2013
International Application No. PCT/US2013/020202
International Filing Date 04.01.2013
IPC
F02D 9/08 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
9Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
08Throttle valves specially adapted therefor; Arrangements of such valves in conduits
CPC
F02B 27/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
27Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
04in exhaust systems only, e.g. for sucking-off combustion gases
06the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
F02B 47/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
47Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
04the substances being other than water or steam only
08the substances including exhaust gas
F02D 9/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
9Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
04concerning exhaust conduits
F02M 26/01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
01Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages
Y02T 10/12
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
10Internal combustion engine [ICE] based vehicles
12Improving ICE efficiencies
Applicants
  • BROWN, Julie N. [US]/[US]
Inventors
  • BROWN, Julie N.
  • REINKE, Paul E.
Agents
  • ABBATT, William G.
Priority Data
13/344,14505.01.2012US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) EXHAUST SYSTEM AND METHOD FOR AN INTERNAL COMBUSTION ENGINE
(FR) SYSTÈME D'ÉCHAPPEMENT ET PROCÉDÉ POUR UN MOTEUR À COMBUSTION INTERNE
Abstract
(EN) An exhaust system and method for optimizing the efficiency of an internal combustion engine from which spent gas emerges. Spent gas is fed to an exhaust housing that accommodates a venturi. Part of the spent gas travels through the venturi and part travels outside the venturi. Across the mouth of the venturi sits a directing valve plate that can be moved, thereby opening or closing the path through the venturi. Some of the spent gas is reflected rearwardly from the venturi and thus reenters the cylinder. Upon doing so, the reflected spent gas occupies some of the space above the piston, lowers combustion pressure and reduces the velocity and pressure of the gas flow emerging therefrom.
(FR) L'invention concerne un système d'échappement et un procédé pour optimiser le rendement d'un moteur à combustion interne d'où sortent des gaz brûlés. Les gaz brûlés sont alimentés dans un boîtier d'échappement où est logé un venturi. Une partie des gaz brûlés traverse le venturi et une partie circule à l'extérieur du venturi. En travers de l'embouchure du venturi se trouve un disque de vanne d'aiguillage qui peut être déplacé, ouvrant ou fermant de ce fait le passage à travers le venturi. Une fraction des gaz brûlés est renvoyée vers l'arrière depuis le venturi et entre ainsi à nouveau dans le cylindre. Ce faisant, les gaz brûlés renvoyés occupent une partie de l'espace au-dessus du piston, abaissent la pression de combustion et réduisent la vitesse et la pression de l'écoulement gazeux s'échappant du cylindre.
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