EP0930431A2 - Einlasssystem für eine Brennkraftmaschine mit wenigstens zwei Zylindern - Google Patents

Einlasssystem für eine Brennkraftmaschine mit wenigstens zwei Zylindern Download PDF

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Publication number
EP0930431A2
EP0930431A2 EP99100656A EP99100656A EP0930431A2 EP 0930431 A2 EP0930431 A2 EP 0930431A2 EP 99100656 A EP99100656 A EP 99100656A EP 99100656 A EP99100656 A EP 99100656A EP 0930431 A2 EP0930431 A2 EP 0930431A2
Authority
EP
European Patent Office
Prior art keywords
combustion engine
intake
surge tank
internal combustion
auxiliary
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP99100656A
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English (en)
French (fr)
Other versions
EP0930431B1 (de
EP0930431A3 (de
Inventor
Hiromitsu c/oYamaha Hatsudoki K. K. Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
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Yamaha Motor Co Ltd
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
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of EP0930431A2 publication Critical patent/EP0930431A2/de
Publication of EP0930431A3 publication Critical patent/EP0930431A3/de
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Publication of EP0930431B1 publication Critical patent/EP0930431B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/08—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/1055—Details of the valve housing having a fluid by-pass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/01—Internal 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10026—Plenum chambers
    • F02M35/10045—Multiple plenum chambers; Plenum chambers having inner separation walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10111—Substantially V-, C- or U-shaped ducts in direction of the flow path
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10308—Equalizing conduits, e.g. between intake ducts or between plenum chambers
    • 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
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B2031/006—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air intake valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M2026/001—Arrangements; Control features; Details
    • F02M2026/009—EGR combined with means to change air/fuel ratio, ignition timing, charge swirl in the cylinder

Definitions

  • the present invention relates to an internal combustion engine, preferably a four-cycle, multi-cylinder engine.
  • Intemal combustion engines using swirling or tumbling action of the air/fuel mixture in each cylinder in order to stabilize combustion are generally known from the prior art.
  • the intake air volume is relatively low when the engine is running in a low-load operating range. Moreover, adequately strong swirling cannot be generated inside of the cylinders of the engine in the low to mid-load operating range.
  • the present invention was developed to address the afore-mentioned technical problems. It has as its objective the provision of an internal combustion engine that provides stable combustion of the air/fuel mixture at low to mid-load operating ranges, and which shows improved fuel economy and reduced NO X emissions.
  • an internal combustion engine comprising a first intake passage branching off from a surge tank and leading to a first cylinder, at least a second intake passage branching off from said surge tank and leading to another cylinder, at least one throttle valve in the intake system, an inter-cylindrical connecting passage connecting said intake passages downstream the at least one throttle valve, an auxiliary intake passage connecting said surge tank and said inter-cylindrical connecting passage, and a control valve for opening and closing said auxiliary intake passage to control the flow therethrough.
  • intake air may flow through the auxiliary air intake passages to the cylinders respectively thereby allowing the creation of a strong swirling or tumbling action of the air/fuel mixture to stabilize combustion particularly during the low to mid-load operating range.
  • exhaust gas recirculation is used in the engine in order to further improve fuel economy and to further reduce NO X emissions. It is immediately apparent that the invention is particularly advantageous to engines using said exhaust gas recirculation as the increase of swirling or tumbling action during the low to mid-load operating range because the amount of recirculated exhaust gas can be increased. It should be noted that exhaust gas recirculation can be obtained not only by a recirculation pipe connecting the exhaust passage and air intake passage but also via the cylinder by increasing the overlap of the opening and closing timing of intake and exhaust valves of the engine.
  • inter-cylindrical connecting passage allows residual fuel or air/fuel mixtures remaining in the respective other cylinder or cylinders to be drawn into one cylinder during its intake stroke to serve as auxiliary fuel thereby eliminating any variations in the amount of fuel injection among the cylinders.
  • Inter-cylindrical connecting passages may be provided between neighbouring intake passages or may connect more or even all intake passages of the engine.
  • the volume of the auxiliary surge tank is roughly equal to or greater than the displacement of the respective cylinders.
  • the auxiliary surge tank is connected with an exhaust passage to allow exhaust gas recirculation via said auxiliary surge tank.
  • both air and the EGR gases are drawn into each cylinder from the auxiliary surge tank thereby further improving fuel economy and reducing NO X emissions.
  • a variable valve timing apparatus is installed for varying the opening and closing timing for the intake valves of the engine thereby allowing to increase the EGR gas content to improve fuel economy and reduce NO X emissions.
  • the inter-cylinder connecting passage open into the air intake passages, preferably in the vicinity of the intake valves, the openings of said intake passages being directed toward the combustion chamber of each cylinder, respectively.
  • an even stronger swirl or tumble is generated inside the cylinders to even further stabilize the combustion of the air/fuel mixture.
  • Figure 1 is a vertical sectional view of a first embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 2 is a top sectional view of a first embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 3 is a component diagram of a first embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 4 is a graph of the relationship between accelerator aperture and air intake volume for of a first embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 5 is a diagram showing the placement of the intercylinder connecting passage of a five-valve engine.
  • Figure 6 is a graph showing the relationship between the throttle aperture and the air intake volume for another embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 7 is a vertical sectional view of a second embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 8 is a top sectional view of a second embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 9 is a component diagram of a second embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figure 10 is a graph showing the timing for the opening and closing of the intake and exhaust valves for an embodiment of a four-cycle, twin cylinder engine according to this invention.
  • Figures 1 through 4 show a first embodiment.
  • the four-cycle, twin cylinder engine 1 has two cylinders 3 installed in the cylinder body, and pistons 4 are slidably inserted into each of the cylinders 3 and connected by piston pins 4 and connecting rods 5 to the crankshaft 6.
  • a cylinder head 7 is attached atop the foregoing cylinder bodies 3, and two air intake passages 8 and two exhaust passages 9 are formed for each cylinder.
  • the air intake passages 8 and the exhaust passages 9 each converge into one air intake passage 8 and one exhaust passage 9.
  • air intake ports 8a and exhaust ports 9a for the air intake passages and exhaust passages which open into the combustion chambers S; these ports are opened and closed at the requisite timing by air intake valves 11 and exhaust valves 12 to provide the required gas change for the cylinders 3.
  • the foregoing air intake valves 11 and the exhaust valves 12 are biased by the valve springs 13, 14 into the normally closed position.
  • the air intake cams 15a and the exhaust cams 16a are integrally formed on the air intake camshaft 15 and the exhaust camshaft 16 to open the valves at the requisite timing.
  • sprockets 17 and 18 are attached to the end of the foregoing air intake camshaft 15 and exhaust camshaft 16. These sprockets 17, 18 are engaged by an endless cam chain 19 that also engages a sprocket (not shown) affixed to the crankshaft (see Fig. 1) which causes the air intake camshaft 15 and the exhaust camshaft to be driven through the sprockets 17 and 18 at 1 ⁇ 2 the speed of the crankshaft 6 to open and close the above described air intake valves 11 and exhaust valves 12 at an appropriate timing.
  • a surge tank 20 is located above the cylinder head 7.
  • Two air intake passages 21 leave from this surge tank and bend into a sideways "U" configuration. The ends of these passages are connected to each cylinder at the foregoing air intake passages 8 that are formed in the cylinder head 7.
  • a throttle valve 22 is installed in the horizontal sections of each of the two air intake passages 21, and both throttle valves 22 are connected integrally through a valve shaft 23.
  • a servo motor or other actuator 24 (see Figure 3) synchronously opens and closes the throttle valves.
  • auxiliary surge tank 25 formed in the sideways “U” bend, inside the two air intake passages 21.
  • This auxiliary surge tank 25 connects to an idle speed control valve (called “ISCV” below) through auxiliary air intake passages 26 that branch downstream of the foregoing surge tank 20.
  • An auxiliary air intake passage 28 connects from the bottom of the auxiliary surge tank, and said auxiliary air intake passage 28 is bent at a right angle to extend approximately horizontally toward the cylinder head.
  • the volume of the auxiliary surge tank is approximately equivalent or slightly more than the displacement of the cylinders.
  • intercylindrical connection passage that connects the adjacent two air intake passages 8 in the vicinity of the air intake valve.
  • Said intercylindrical connection passage 29 is fitted with openings into the air intake passages 8 that are directed toward the combustion chambers of each cylinder (see Figure 1).
  • the foregoing auxiliary air intake passage 28 also connects to this intercylindrical connection passage 29.
  • the auxiliary air intake passages 26, 28 bypass the throttle valve 22 and are connected to the intercylindrical connection passage 29.
  • Located midway are the auxiliary surge tank 25 and ISCV 27.
  • the combination of ISCV 27 and actuator 24 is connected to an engine control unit 30 (called “ECU” below) and is driven by control signals from that ECU 30.
  • exhaust pipes 31 are connected to each of the exhaust passages 9 formed in the cylinder head 7, and each exhaust pipe is connected to a catalytic converter 32 which in turn is connected to a tail pipe 33 that opens into the atmosphere.
  • 34 is an exhaust temperature sensor.
  • One of the exhaust pipes leads to the EGR pipe 35, and said EGR pipe connects to the foregoing auxiliary surge tank 25, with an EGR valve 37 being installed midway between them.
  • the auxiliary surge tank 25 is also connected to a brake booster (not shown).
  • Figure 4 shows the flow/volume relationship between ISCV 27 and an accelerator angle or aperture (amount of accelerator movement) controlling the throttle aperture ⁇ .
  • the accelerator aperture a value as shown in the figure is ⁇ 1 ; thereafter, in low load operating ranges, the ECU 30 exerts control to leave only the ISCV 27 open while keeping the throttle valves 22 fully closed.
  • intake air that is drawn into the surge tank bypasses the throttle valves 22 and flows into the auxiliary air intake passage 26 before passing the ISCV 27 and being introduced into the auxiliary surge tank 25.
  • a part of the exhaust gases generated during the previous cycle is moved through the EGR pipe 35 and the EGR valve into the auxiliary surge tank 25.
  • the intake air from the auxiliary surge tank 25 and the EGR gases pass through the auxiliary air intake passage 28 and through the intercylindrical connection passage 29, and then into the cylinder during its air intake stroke (see the right cylinder in Figure 3).
  • the required amount of fuel is injected from the injectors 10 into the air intake passages 8, and this fuel is mixed with the intake air to form the requisite ratio of an air/fuel mixture.
  • the openings from the intercylindrical connection passage 29 into the air intake passages 8 are directed toward the combustion chambers S of the respective cylinders to generate a strong swirl, such as shown by the arrows in Figure 3, inside the cylinder undergoing the air intake stroke.
  • This feature stabilizes the combustion of the air/fuel mixture.
  • the residual fuel or air/fuel mixture in the air intake passage 8 of the other cylinder is also drawn-in during the same intake stroke as an intercylindrical supplementary fuel source, and this intake eliminates any variations in the amount of fuel injected from the injectors 10 among the cylinders.
  • a part of the exhaust gases generated by the combustion of the air/fuel mixture in the combustion chamber S passes through the EGR pipe 35 and EGR valve 37 and is then introduced into the auxiliary surge tank 25.
  • the ECU 30 When the accelerator aperture ⁇ exceeds the ⁇ 1 aperture shown in Figure 4 to reach a mid-range load operating range, the ECU 30 will drive the actuator 24 and gradually opens the throttle valve 22.
  • the intake air drawn into the surge tank flows into the air intake passage of the cylinder undergoing the intake stroke, and the subsequent fuel/air mixture is drawn into that cylinder from both the intercylindrical connection passage 29 and the air intake passage 21. Accordingly, since the intercylindrical connection passage 29 remains directed toward the combustion chamber in this mid-load operating range, the introduction of the air-fuel mixture into the cylinder 3 produces a swirl in same that stabilizes the combustion of this air/fuel mixture. This feature makes it possible to increase the utilization of EGR gases, thus improving fuel economy and reducing NO X emissions.
  • the air/fuel mixture is introduced into the cylinders at a high velocity.
  • a uniform air/fuel mixture is provided inside the cylinders, making possible stable combustion of the air/fuel mixture in the combustion chambers S. Since the valve 37 is fully closed while the engine is operating in the high load range, the exhaust gases generated by the combustion of the air/fuel mixture are not introduced into the auxiliary surge tank 25; all of the exhaust gases pass through the exhaust pipes 31, through the catalytic converter 32 to be cleaned, and then through the tail pipe 33 to be released into the atmosphere.
  • the ISCV valve may be opened only during idling so that the intake air bypasses the throttle valve and flows through the auxiliary surge tank, then the auxiliary air intake passage and the intercylindrical connection passages to each cylinder where it creates a swirling or tumbling action.
  • the horizontal axis shows the throttle aperture (accelerator pedal aperture).
  • Figure 7 is a vertical sectional view of the four-cycle, twin cylinder engine of this embodiment
  • Figure 8 is a top sectional view of the same engine
  • Figure 9 is a diagram of the engine components
  • Figure 10 is a graph showing the timing for the opening and closing of the intake and exhaust valves.
  • parts corresponding to those shown in Figures 1 through 3 bear the same reference numbers, and further explanation of them will be omitted.
  • variable valve timing apparatus 36 that can vary the timing of the opening and closing of the air intake valves 11 has been installed on the end of the camshaft 15. Also, the EGR pipe 35 and EGR valve 37 (see Figures 2 and 3) used in the previous first embodiment were not installed.
  • variable valve timing apparatus 36 is driven (ON) so as to control the opening and closing timing of the intake valves 11 at the advance angle shown in Figure 10(a), thereby increasing the overlap ⁇ 1 between the intake and exhaust valves 11, 12 to make it possible to increase the volume of residual gases in each cylinder and to increase the internal amount of EGR to improve fuel economy and reduce NO X emissions, while at the same time eliminating the need for the EGR valve 35 that was used in the first embodiment.
  • variable valve timing apparatus 36 is shut down (OFF) to reduce the overlap ⁇ 2 between the intake and exhaust valves 11, 12 as shown in Figure 10(b).
  • the horizontal axis shows the crank angle and "TDC" is the top dead center.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
EP99100656A 1998-01-14 1999-01-14 Einlasssystem für eine Brennkraftmaschine mit wenigstens zwei Zylindern Expired - Lifetime EP0930431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP00548498A JP3916313B2 (ja) 1998-01-14 1998-01-14 ４サイクル多気筒エンジン
JP548498 1998-01-14

Publications (3)

Publication Number Publication Date
EP0930431A2 true EP0930431A2 (de) 1999-07-21
EP0930431A3 EP0930431A3 (de) 2000-05-03
EP0930431B1 EP0930431B1 (de) 2004-09-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100656A Expired - Lifetime EP0930431B1 (de) 1998-01-14 1999-01-14 Einlasssystem für eine Brennkraftmaschine mit wenigstens zwei Zylindern

Country Status (4)

Country Link
EP (1) EP0930431B1 (de)
JP (1) JP3916313B2 (de)
DE (1) DE69919916T2 (de)
PL (1) PL193890B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007033389A1 (de) * 2005-09-20 2007-03-29 Avl List Gmbh Brennkraftmaschine
CN102966473A (zh) * 2012-10-23 2013-03-13 安徽中鼎动力有限公司 一种火花点火式内燃机的进气歧管
US9027536B2 (en) 2012-06-26 2015-05-12 Ford Global Technologies, Llc Crankcase ventilation and vacuum generation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5910528B2 (ja) * 2013-02-14 2016-04-27 トヨタ自動車株式会社 内燃機関の制御装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2016081A (en) * 1978-03-08 1979-09-19 Yamaha Motor Co Ltd IC engine induction system
US4489688A (en) * 1983-03-16 1984-12-25 Toyota Jidosha Kabushiki Kaisha Control for idle speed control valve
US4700666A (en) * 1985-04-11 1987-10-20 Nissan Motor Co., Ltd. Induction system for internal combustion engine
US5063899A (en) * 1989-12-06 1991-11-12 Mazda Motor Corporation Intake system for multi-cylinder internal combustion engine
US5329912A (en) * 1991-12-19 1994-07-19 Yamaha Hatsudoki Kabushiki Kaisha Induction system for an internal combustion engine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112329A (en) * 1977-03-12 1978-09-30 Yamaha Motor Co Ltd Intake apparatus for internal combustion engine
JPS5629022A (en) * 1979-08-17 1981-03-23 Yamaha Motor Co Ltd Suction system for engine
JPS6193228A (ja) * 1984-10-12 1986-05-12 Mitsubishi Motors Corp スライドバルブを用いたエンジンのアイドル機構
JPS63168223U (de) * 1987-04-24 1988-11-01
JPH01193038A (ja) * 1988-01-29 1989-08-03 Mazda Motor Corp 多気筒エンジンの吸入空気制御装置
JPH01216019A (ja) * 1988-02-25 1989-08-30 Fuji Heavy Ind Ltd 車両用エンジンの吸気制御装置
JPH0693866A (ja) * 1992-09-11 1994-04-05 Suzuki Motor Corp エンジンの吸気装置
JPH0693867A (ja) * 1992-09-11 1994-04-05 Suzuki Motor Corp エンジンの吸気装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2016081A (en) * 1978-03-08 1979-09-19 Yamaha Motor Co Ltd IC engine induction system
US4489688A (en) * 1983-03-16 1984-12-25 Toyota Jidosha Kabushiki Kaisha Control for idle speed control valve
US4700666A (en) * 1985-04-11 1987-10-20 Nissan Motor Co., Ltd. Induction system for internal combustion engine
US5063899A (en) * 1989-12-06 1991-11-12 Mazda Motor Corporation Intake system for multi-cylinder internal combustion engine
US5329912A (en) * 1991-12-19 1994-07-19 Yamaha Hatsudoki Kabushiki Kaisha Induction system for an internal combustion engine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 270 (M-517), 13 September 1986 (1986-09-13) & JP 61 093228 A (MITSUBISHI), 12 May 1986 (1986-05-12) *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 485 (M-887), 6 November 1989 (1989-11-06) & JP 01 193038 A (MAZDA), 3 August 1989 (1989-08-03) *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 528 (M-898), 24 November 1989 (1989-11-24) & JP 01 216019 A (FUJI HEAVY IND), 30 August 1989 (1989-08-30) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007033389A1 (de) * 2005-09-20 2007-03-29 Avl List Gmbh Brennkraftmaschine
US9027536B2 (en) 2012-06-26 2015-05-12 Ford Global Technologies, Llc Crankcase ventilation and vacuum generation
CN102966473A (zh) * 2012-10-23 2013-03-13 安徽中鼎动力有限公司 一种火花点火式内燃机的进气歧管
CN102966473B (zh) * 2012-10-23 2014-10-29 安徽中鼎动力有限公司 一种火花点火式内燃机的进气歧管

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EP0930431B1 (de) 2004-09-08
DE69919916D1 (de) 2004-10-14
JP3916313B2 (ja) 2007-05-16
EP0930431A3 (de) 2000-05-03
PL330836A1 (en) 1999-07-19
JPH11200869A (ja) 1999-07-27
DE69919916T2 (de) 2005-01-20
PL193890B1 (pl) 2007-03-30

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