WO2023167599A1 - Dispositif d'échappement, système d'échappement de moteur et procédé d'amélioration de l'efficacité d'un échappement de moteur à combustion interne - Google Patents

Dispositif d'échappement, système d'échappement de moteur et procédé d'amélioration de l'efficacité d'un échappement de moteur à combustion interne Download PDF

Info

Publication number
WO2023167599A1
WO2023167599A1 PCT/NZ2023/050030 NZ2023050030W WO2023167599A1 WO 2023167599 A1 WO2023167599 A1 WO 2023167599A1 NZ 2023050030 W NZ2023050030 W NZ 2023050030W WO 2023167599 A1 WO2023167599 A1 WO 2023167599A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
internal combustion
combustion engine
injector
coolant fluid
Prior art date
Application number
PCT/NZ2023/050030
Other languages
English (en)
Inventor
Bennett Augustus Hikitai KAA
Original Assignee
Kaa Bennett Augustus Hikitai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2022900520A external-priority patent/AU2022900520A0/en
Application filed by Kaa Bennett Augustus Hikitai filed Critical Kaa Bennett Augustus Hikitai
Publication of WO2023167599A1 publication Critical patent/WO2023167599A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/04—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/024—Exhaust treating devices having provisions not otherwise provided for for cooling the device using a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1433—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1433—Pumps
    • F01N2610/144—Control thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F01N2610/146—Control thereof, e.g. control of injectors or injection valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • An internal combustion engine includes a combustion chamber having an inlet port and an outlet (exhaust) port.
  • a fuel oxidant (usually air) mixture is introduced into the combustion chamber where it is ignited either by a spark or pressure. Combustion of the fuel oxidant mixture results in expansion of high-temperature and high-pressure (exhaust) gases that directly apply a force to a piston component of the engine.
  • the exhaust gases are then allowed to exit the combustion chamber through the exhaust port and are replaced with a fresh fuel oxidant mixture ready for the next combustion cycle.
  • the process of replacing the exhaust gas in a combustion chamber of an internal combustion engine with the fresh air/oxidant mixture is known as scavenging. If the scavenging process is incomplete remaining exhaust gases in the chamber reduce the level of desired fuel-oxidant charge and can cause improper combustion for the next cycle, leading to reduced power output of the engine.
  • an exhaust or exhaust device including an injector arranged in an exhaust duct connected with an internal combustion engine, a reservoir for housing a coolant fluid, a pump fluidical ly connected between the reservoir and the injector for increasing a pressure of the coolant fluid supplied from the reservoir to the injector, and a controller operable to activate the injector during a selected period of a combustion cycle of the internal combustion engine.
  • the selected period of a combustion cycle includes the exhaust cycle of the engine and more specifically a period where timing of inlet and exhaust valves overlap to scavenge the combustion chambers of the engine.
  • the coolant fluid is water.
  • the injector is arranged at a location adjacent an expansion chamber or resonator of the exhaust duct.
  • an exhaust device for an internal combustion engine, the engine having an inlet valve, a chamber for combustion of a fuel and oxidiser mixture, and exhaust valve and an exhaust system in communication with the exhaust valve for carrying high-temperature and high-pressure gases produced by the combustion from within the chamber.
  • the exhaust device includes: i) a reservoir for housing a coolant fluid, ii) an injector arranged to selectively deliver coolant fluid from the reservoir into an internal combustion engine exhaust, iii) a pump for increasing a pressure of the coolant fluid supplied from the reservoir to the injector, and iv) a controller connected with the injector and arranged to activate the injector to selectively deliver coolant fluid from the reservoir under predetermined operating conditions.
  • the controller includes an input for receiving signals from an internal combustion engine controller, the signals representing one or more of a rotational speed of the internal combustion engine, a desired inlet volume of a fuel oxidiser mixture, a position of the inlet valve and a position of the outlet valve.
  • the predetermined operating conditions include one or more of a rotational speed of the internal combustion engine, a desired inlet volume of a fuel oxidiser mixture, a position of the inlet valve and a position of the outlet valve.
  • the controller is arranged to selectively activate the injector to deliver coolant fluid into an internal combustion engine exhaust when one of a rotational speed of the internal combustion engine or a desired inlet volume of a fuel oxidiser mixture are above a predefined value.
  • the controller is arranged to selectively activate the injector to deliver coolant fluid into an internal combustion engine exhaust when an open position of an inlet valve overlaps with an open position of an exhaust valve.
  • the exhaust device is connected with the exhaust system of an internal combustion engine.
  • the controller is part of an internal combustion engine controller.
  • the coolant fluid is water.
  • the injector is located adjacent an expansion chamber or resonator of the exhaust system.
  • an internal combustion engine exhaust system including: i) an exhaust duct arranged to carry high-temperature and high-pressure gases produced by combustion in an internal combustion engine, ii) a water tank, iii) an injector fluidically connected to the water tank and arranged to selectively inject water from the tank into the exhaust duct, iv) a pump for increasing a pressure of the water supplied from the tank to the injector, and v) a controller connected with the injector and arranged to activate the injector to selectively deliver water from the tank under predetermined operating conditions of a connected internal combustion engine.
  • the predetermined operating conditions include one or more of: a rotational speed of the internal combustion engine being above a predefined speed, or a desired inlet volume of a fuel oxidiser mixture being above a predefined value, or when an open position of an inlet valve overlaps with an open position of an exhaust valve of the internal combustion engine.
  • the exhaust duct includes an expansion chamber or resonator, and wherein the injector is arranged to selectively inject water from the tank into the exhaust duct upstream of the expansion chamber or resonator.
  • a method of improving the effectiveness of an internal combustion engine exhaust including an exhaust duct arranged to carry high-temperature and high-pressure gases produced by combustion in the internal combustion engine, the method including: providing in an exhaust duct an injector arranged to selectively deliver coolant fluid into the duct, fizidica lly connecting the injector with a pressurised supply of coolant fluid, and selectively activating the injector to deliver coolant fluid into the exhaust duct under predetermined operating conditions of the internal combustion engine.
  • selectively activating the injector is based on one or more of: a rotational speed of the internal combustion engine being above a predefined speed, or a desired inlet volume of a fuel oxidiser mixture being above a predefined value, or when an open position of an inlet valve overlaps with an open position of an exhaust valve of the internal combustion engine.
  • a rotational speed of the internal combustion engine being above a predefined speed
  • a desired inlet volume of a fuel oxidiser mixture being above a predefined value
  • an open position of an inlet valve overlaps with an open position of an exhaust valve of the internal combustion engine is provided in the exhaust duct and expansion chamber or resonator, and positioning the injector to deliver coolant fluid into the exhaust duct upstream of the expansion chamber or resonator.
  • Figure 1 is a first schematic illustration of an internal combustion engine and exhaust having an exhaust device according to the invention
  • Figure 2 is a second schematic illustration of an internal combustion engine and exhaust having an exhaust device according to the invention
  • Figure 3 is a graphical representation of potential power benefits using the device or method of the invention.
  • Figure 4 is a graphical representation of potential torque benefits using the device or method of the invention.
  • Figure 5 is a partial second schematic illustration of an internal combustion engine and exhaust having an exhaust device according other examples of the invention.
  • ECU Engine control unit
  • FIG. 1 there is shown a schematic view of an internal combustion engine 10 (100) includes at least one cylinder having a cylinder wall 14 defining a combustion chamber 12 in a top portion of the cylinder.
  • the combustion chamber 12 has an inlet port 22 and an outlet (exhaust) port 34.
  • the inlet port 22 is selectively opened and closed by an inlet valve 24 controlled by an inlet valve cam 26.
  • the outlet port 34 is selectively opened and closed by an outlet valve 36 controlled by an outlet valve cam 38.
  • An inlet manifold 28 communicates with the inlet port for the introduction of a fuel and oxidant (usually air) mixture 30 into the combustion chamber 12 during an open period of the inlet port 22.
  • the fuel air mixture 30 is ignited either by a sparkplug 32, or in some instances pressure. Combustion of the fuel air mixture 30 results in expansion of high-temperature and high-pressure (exhaust) gases that directly apply a force to a piston 16 of the engine.
  • the piston 16 is connected with a crankshaft 20 via a conrod 18 such that linear movement of the piston 16 within the cylinder is translated to a rotational output of the engine 10 (100). After combustion gases have moved piston 16 down the cylinder the exhaust gases are then allowed to exit the combustion chamber 12 through the exhaust port 34 into an exhaust manifold 28 connected with the exhaust port 34.
  • the exhaust manifold 40 interconnects with an exhaust pipe (duct) 44 of a vehicle exhaust system which guides the exhaust gases 42 away from the engine 10 (100) to an exhaust tip 48 where they are vented to the open air.
  • the present invention is predicated in part on the skilled effort and experimentation of the inventor in identifying previously unrecognised benefit to the power and efficiency of an internal combustion engine that results from the selective injection of a coolant fluid into the exhaust system of the engine.
  • Preferred examples of the invention include injecting the coolant fluid, in a preferred example water, into an internal combustion engine exhaust under predetermined operating conditions.
  • the coolant fluid such as water
  • the coolant fluid is injected into the exhaust flow it turns from a liquid into gas (e.g. steam) and in doing so absorbs heat from the exhaust gases around it.
  • the exhaust gases are cooled which reduces the hydraulic resistance (back-pressure) of the exhaust system and increases peak power.
  • the invention delivers a coolant fluid into an exhaust at a time when an open position of an inlet valve overlaps with an open position of an exhaust valve. In some examples the invention delivers a coolant fluid into an exhaust at a time when a rotational speed of the engine 10 (100) is above a predetermined value. In some examples the invention delivers a coolant fluid into an exhaust at a time when a desired inlet volume of the fuel oxidiser mixture 30 is above a predetermined value. A desired inlet volume of the fuel oxidiser mixture 30 can be inferred from a position of the engine throttle or position of a component of a carburettor or throttle body.
  • the invention provides a device for an internal combustion engine exhaust, or in some examples an exhaust system, having a reservoir 54 for housing the coolant fluid such as water.
  • a pump 52 is fluidically connected with the reservoir 54 and is used to increase the pressure of the coolant fluid.
  • An injector 50 is fluidically connected with the pump 52 by conduit 56. The injector is arranged in a wall of the exhaust pipe 44 to selectively deliver coolant fluid from the reservoir into the exhaust pipe 44.
  • a controller is connected with the injector 50 and pump 52 and is arranged to activate the injector 50 to selectively deliver coolant fluid from the reservoir under desired operating conditions of the engine. In some examples the controller may be programmed to continuously inject cooling fluid into the exhaust.
  • the size of the reservoir 54 may dictate that coolant fluid is only injected into the exhaust pipe 44 during predefined operating conditions of the engine 10 (100). These operating conditions may be during certain operating demands required of the engine, such as higher operating speeds or where higher power is requested. The selected periods may be during the whole operating cycle of the engine or only during periodic shorter periods of the operating cycle such as during a brief period when an open position of an inlet port 22 overlaps with an open position of an exhaust port 34 to assist with scavenging the combustion chamber 12.
  • the exhaust system for most internal combustion engines 10 has a resonator 46, or on some engine types an expansion chamber.
  • the skilled effort and experimentation of the inventor has identified the previously unrecognised benefit of injecting the coolant fluid into the exhaust pipe 44 at a location adjacent to an expansion chamber or resonator 46 of the exhaust system. In preferred examples the adjacent location is immediately upstream of the expansion chamber or resonator 46.
  • the controller 60 has inputs to received signals representing operating conditions of the engine, including but not limited to signals representing one or more of a rotational speed of the internal combustion engine, a desired inlet volume of a fuel oxidiser mixture, a position of the inlet valve and a position of the outlet valve.
  • the controller 60 functions may be performed by or be part of an engine control unit (ECU) 62.
  • ECU engine control unit
  • a fill-port 58 may also be provided for refilling the reservoir 54.
  • an on-board water generation means may be provided as part of the vehicle or engine. Such means may harvest water from air condition condensate, or from exhaust gases condensate at the tail pipe (water vapour is a by-product of combustion of petrol/gasoline), or by collecting rain water from the vehicle body.
  • An on-board water generation means may be fully closed loop, or may also include a fill port to supplement the on-board water generation means.
  • the invention may be applied to both 2 and 4 stroke engines and to engines have one or more cylinders.
  • FIGS 3 and 4 graphically illustrates power and torque curves for an internal combustion engine operating under normal conditions (line A) and with selective injection of water into the exhaust system (line B) according to the invention.
  • the internal combustion engine of the test setup was a 1991 Toyota 1.3L (1,295 cc) model '2E' 4-cylinder 4-stroke engine.
  • a fan-type injector was located immediately upstream of the engine exhaust resonator. The injector had a rated flow of 22.31 to 223 ml/sec (21.21 to 212 gph) and pressure rage of 5 to 500 psi (3.52 to 352 m H2O). Water was delivered by a pump rated at 6.38 litre/minute at 107 psi.
  • the exhaust system may include a downstream turbo unit comprising a exhaust gas driven turbine wheel 70.
  • the turbine 70 is spun by exhaust gases flowing in the exhaust pipe 44 towards the tail pipe tip 48.
  • the turbine shaft is connected with a turbine generator 72 which is spun by the turbine 70 and is used to generate an electrical charge.
  • the electrical charge is transferred to a storage unit such as a battery (not shown) for use at a later time.
  • the electrical charge may be at 12 volts.
  • the electrical charge may be at may be higher than 12 volts.
  • the electrical charge may be used to operate electrically controlled components of the vehicle.
  • the electrically controlled components may be an auxiliary electric motor such as in a hybrid type vehicle.
  • the electrically controlled components may be electrically controlled suspension damping components and the like.
  • the turbine 70 may also spin a turbine compressor 74.
  • the turbine compressor 74 is used to generate an air charge 78.
  • the air charge 78 may be returned to the engine air intake as is known.
  • the air charge 78 is directed through a charge pipe to a charged injection port in the exhaust pipe 44 downstream of the turbine 70. The injection of charged air into the exhaust downstream of the turbine aids in the extraction of exhaust gases towards the exhaust tip 48.
  • a second water injection port 76 in the exhaust pipe 44 downstream of the turbine 70.
  • the second water injection port 76 may be operated from the same supply as the first water injection port 50 or from its own supply and pump in the same manner as first injection port 50.
  • the injection of water downstream of the turbine 70 has the same or similar benefits is the first water injection port 50 of aiding the extraction of exhaust gases towards the exhaust tip 48.
  • the turbine 70 may be a second turbine.
  • a first turbine may be positioned earlier in the exhaust flow and used to charge air for the engine intake.
  • the second turbine 70 is used to turn a generator 72 only.
  • the second turbine 70 is used to turn a second compressor wheel 74 only.
  • the second turbine 70 is used to turn both a generator 72 and a second compressor well 74.
  • the turbine 70 may be near the exhaust tip 48.
  • the charged air inlet 80 may be near the exhaust tip 48.
  • the second water jet 76 may be near the exhaust tip 48.
  • the invention may also be said broadly to consist in the parts, elements and features referred to or indicated in the specification of the application, individually or collectively, in any or all combinations of two or more of said parts, elements or features.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

Un dispositif d'échappement comprend un injecteur conçu pour distribuer sélectivement un fluide de refroidissement à partir d'un réservoir dans un échappement de moteur à combustion interne. Un dispositif de commande est relié à l'injecteur et conçu pour activer l'injecteur afin de distribuer sélectivement un fluide de refroidissement à partir du réservoir dans des conditions de fonctionnement prédéterminées. Une pompe est prévue pour augmenter une pression du fluide de refroidissement fourni par le réservoir à l'injecteur.
PCT/NZ2023/050030 2022-03-04 2023-03-06 Dispositif d'échappement, système d'échappement de moteur et procédé d'amélioration de l'efficacité d'un échappement de moteur à combustion interne WO2023167599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2022900520A AU2022900520A0 (en) 2022-03-04 Exhaust Device, Engine Exhaust System and Method for improving the effectiveness of an internal combustion engine exhaust
AU2022900520 2022-03-04

Publications (1)

Publication Number Publication Date
WO2023167599A1 true WO2023167599A1 (fr) 2023-09-07

Family

ID=87884094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2023/050030 WO2023167599A1 (fr) 2022-03-04 2023-03-06 Dispositif d'échappement, système d'échappement de moteur et procédé d'amélioration de l'efficacité d'un échappement de moteur à combustion interne

Country Status (1)

Country Link
WO (1) WO2023167599A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920745A (en) * 1984-04-09 1990-05-01 Orbital Engine Company Proprietary Limited Internal combustion engines
US5983633A (en) * 1997-05-30 1999-11-16 Autotronic Controls Corporation Electronically controlled water injection system
US6151892A (en) * 1999-06-01 2000-11-28 Brunswick Corporation Internal combustion engine with programmed water injection into its exhaust system
JP2010037979A (ja) * 2008-08-01 2010-02-18 Denso Corp 排気浄化装置
JP2013160127A (ja) * 2012-02-03 2013-08-19 Toyota Motor Corp 内燃機関の排気浄化装置
US20160138452A1 (en) * 2008-06-06 2016-05-19 Delphi International Operations Luxembourg S.A.R.L Reagent Dosing System And Method Of Dosing Reagent
EP3051088A1 (fr) * 2015-02-02 2016-08-03 Toyota Jidosha Kabushiki Kaisha Dispositif d'alimentation en additif
CN107288743A (zh) * 2017-08-04 2017-10-24 哈尔滨工业大学 一种喷水式内燃机排气系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920745A (en) * 1984-04-09 1990-05-01 Orbital Engine Company Proprietary Limited Internal combustion engines
US5983633A (en) * 1997-05-30 1999-11-16 Autotronic Controls Corporation Electronically controlled water injection system
US6151892A (en) * 1999-06-01 2000-11-28 Brunswick Corporation Internal combustion engine with programmed water injection into its exhaust system
US20160138452A1 (en) * 2008-06-06 2016-05-19 Delphi International Operations Luxembourg S.A.R.L Reagent Dosing System And Method Of Dosing Reagent
JP2010037979A (ja) * 2008-08-01 2010-02-18 Denso Corp 排気浄化装置
JP2013160127A (ja) * 2012-02-03 2013-08-19 Toyota Motor Corp 内燃機関の排気浄化装置
EP3051088A1 (fr) * 2015-02-02 2016-08-03 Toyota Jidosha Kabushiki Kaisha Dispositif d'alimentation en additif
CN107288743A (zh) * 2017-08-04 2017-10-24 哈尔滨工业大学 一种喷水式内燃机排气系统

Similar Documents

Publication Publication Date Title
US7958872B1 (en) Airless engine with gas and water recycling
US5930992A (en) Process for controlling a multiple cylinder internal combustion engine in the cold start and warming up phases
US7549412B2 (en) System and method for recovering wasted energy from an internal combustion engine
CN101137832B (zh) 气体燃料直喷系统
US7954478B1 (en) Airless engine
CN102498272A (zh) 具有用于渡过涡轮迟滞的连接的压力罐的涡轮增压往复活塞式发动机及操作所述发动机的方法
US7021272B2 (en) Computer controlled multi-stroke cycle power generating assembly and method of operation
EP0410355B1 (fr) Moteur à deux temps avec injection dans le cylindre
CN103266950A (zh) 一种油水燃料复合式废气动力型二行程发动机
US11111884B2 (en) Spark-ignition internal combustion engine having urea introduction device and method for operating an internal combustion engine of this type
GB2476108A (en) Supplying stored exhaust gases to an i.c. engine cylinder when starting the engine
JP2997750B2 (ja) 燃料噴射式エンジン
GB2472821A (en) Diaphragm IC engine with aqueous barrier and direct hydraulic output
WO2023167599A1 (fr) Dispositif d'échappement, système d'échappement de moteur et procédé d'amélioration de l'efficacité d'un échappement de moteur à combustion interne
US20110297120A1 (en) RAKH Cycle, Boilerless, Airless, Hydrogen Fueled, Closed Cycle, Steam Engine
EP2596226B1 (fr) Système pour partialiser un moteur à combustion interne
US3062199A (en) Combustion engine system
RU55881U1 (ru) Газодизельная система трактора
RU213211U1 (ru) Система кратковременного форсирования силовой установки танка с устройством ионизации воды
RU207444U1 (ru) Дизельный двигатель военной гусеничной машины с устройством регулирования наддува
CN112154259B (zh) 船用内燃机
JP2012052441A (ja) 内燃機関の点火制御装置
RU2168030C2 (ru) Термодинамический цикл и двигатель цаголовых р.с. и а.р.
KR0133960Y1 (ko) Lpg 자동차의 연료공급장치
KR100563929B1 (ko) 차량용 연료공급장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23763782

Country of ref document: EP

Kind code of ref document: A1