WO2016201467A1 - Procédé pour faire fonctionner un moteur à allumage commandé à deux temps, pouvant être commandé par un papillon des gaz - Google Patents

Procédé pour faire fonctionner un moteur à allumage commandé à deux temps, pouvant être commandé par un papillon des gaz Download PDF

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Publication number
WO2016201467A1
WO2016201467A1 PCT/AT2016/050192 AT2016050192W WO2016201467A1 WO 2016201467 A1 WO2016201467 A1 WO 2016201467A1 AT 2016050192 W AT2016050192 W AT 2016050192W WO 2016201467 A1 WO2016201467 A1 WO 2016201467A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
fuel
speed
throttle valve
operating
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.)
Ceased
Application number
PCT/AT2016/050192
Other languages
German (de)
English (en)
Inventor
Franz Winkler
Roland Oswald
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.)
Forschungsgesellschaft fur Verbrennungskraftmaschinen und Thermodynamik Mbh
Original Assignee
Forschungsgesellschaft fur Verbrennungskraftmaschinen und Thermodynamik Mbh
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 Forschungsgesellschaft fur Verbrennungskraftmaschinen und Thermodynamik Mbh filed Critical Forschungsgesellschaft fur Verbrennungskraftmaschinen und Thermodynamik Mbh
Priority to DE112016002694.3T priority Critical patent/DE112016002694A5/de
Publication of WO2016201467A1 publication Critical patent/WO2016201467A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling
    • F02D41/083—Introducing corrections for particular operating conditions for idling taking into account engine load variation, e.g. air-conditionning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/007—Electric control of rotation speed controlling fuel supply
    • F02D31/009—Electric control of rotation speed controlling fuel supply for maximum speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/32—Controlling fuel injection of the low pressure type
    • F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/04—Two-stroke combustion engines with electronic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/06—Small engines with electronic control, e.g. for hand held tools

Definitions

  • the invention relates to a method for operating a controllable by a throttle two-stroke gasoline engine with at least one cylinder is injected directly into the fuel in a dependent of the speed and the throttle position.
  • Throttle position and on the other hand by the engine speed certain operating points are ensured, with a speed setting in load operation, in which the output engine power corresponds to the engine load.
  • the two-stroke gasoline engine turns on the assumption of advantageous for the combustion air-fuel ratio because of the lack of load to the final speed high.
  • the invention is therefore based on the object to stabilize the speed of a two-stroke gasoline engine at idle in a way that improved
  • the invention solves the problem by the fact that during a motor discharge when exceeding a at a
  • Engine load is injected from the throttle position certain speed range of fuel in every second cycle to form a rich air-fuel mixture in a larger amount in the cylinder.
  • Throttle position allows the maintenance of a constant speed under favorable combustion conditions, so unlike the control of the load operation, the air-fuel mixture is enriched in every second cycle with the effect that the characteristic of a two-stroke engine
  • Throttle position dependent speed range is limited, because the speed can not increase by the disturbed in this area gas dynamics and thus the otherwise existing danger is banned that this limited speed range is exceeded and then the two-stroke gasoline engine again unchecked high.
  • Injection of the fuel into the cylinder changed, in the sense that the air-fuel mixture is enriched by an increased injection quantity in every second cycle and due to the associated cyclically alternately different combustion, the typical gas dynamics of a two-stroke engine is so disturbed that further revving is prevented.
  • Curve 2 in dashed lines illustrates this limit, so that only in the area between curves 1 and 2 the alternating mixture formation of enriched and non-enriched air-fuel mixtures is carried out.
  • This has the advantage that the response of the operated under load two-stroke gasoline engine in a region below the curve 2 is not affected by the alternately different mixture formation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un moteur à allumage commandé à deux temps, pouvant être commandé par un papillon des gaz, comprenant au moins un cylindre dans lequel est directement injectée une quantité de carburant qui est fonction du régime moteur et de la position du papillon des gaz. L'objectif de l'invention est de stabiliser le régime moteur. A cet effet, pendant une phase de détente du moteur, en cas de dépassement d'une plage de régime moteur déterminé lors d'une sollicitation du moteur par la position du papillon des gaz, une plus grande quantité de carburant est injectée dans le cylindre, un cycle de travail sur deux, pour former un mélange air-carburant riche.
PCT/AT2016/050192 2015-06-15 2016-06-13 Procédé pour faire fonctionner un moteur à allumage commandé à deux temps, pouvant être commandé par un papillon des gaz Ceased WO2016201467A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112016002694.3T DE112016002694A5 (de) 2015-06-15 2016-06-13 Verfahren zum Betreiben eines durch eine Drosselklappe steuerbaren Zweitakt-Ottomotors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50489/2015 2015-06-15
ATA50489/2015A AT516758B1 (de) 2015-06-15 2015-06-15 Verfahren zum Betreiben eines durch eine Drosselklappe steuerbaren Zweitakt-Ottomotors

Publications (1)

Publication Number Publication Date
WO2016201467A1 true WO2016201467A1 (fr) 2016-12-22

Family

ID=56368736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2016/050192 Ceased WO2016201467A1 (fr) 2015-06-15 2016-06-13 Procédé pour faire fonctionner un moteur à allumage commandé à deux temps, pouvant être commandé par un papillon des gaz

Country Status (3)

Country Link
AT (1) AT516758B1 (fr)
DE (1) DE112016002694A5 (fr)
WO (1) WO2016201467A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120140298A (zh) * 2025-05-06 2025-06-13 瑞诺(济南)动力科技有限公司 针对电动工程机械的流量需求控制方法及设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822685A (en) * 1970-09-23 1974-07-09 Borg Warner Charge forming method and apparatus with overspeed governor
AT408250B (de) * 1985-04-29 2001-09-25 Bombardier Rotax Gmbh Verfahren zum betreiben einer zweitakt-brennkraftmaschine und zweitakt-brennkraftmaschine
US20080011271A1 (en) * 2006-07-13 2008-01-17 Nils Kunert Method for operating an internal combustion engine
US20090178648A1 (en) * 2008-01-11 2009-07-16 Andreas Stihl Ag & Co. Kg. Method for operating an internal combustion engine
US20110004395A1 (en) * 2009-07-04 2011-01-06 Andreas Stihl Ag & Co. Kg Method for Operating an Internal Combustion Engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5282448A (en) * 1993-03-01 1994-02-01 General Motors Corporation Fuel control of a two-stroke engine with over-center throttle body

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822685A (en) * 1970-09-23 1974-07-09 Borg Warner Charge forming method and apparatus with overspeed governor
AT408250B (de) * 1985-04-29 2001-09-25 Bombardier Rotax Gmbh Verfahren zum betreiben einer zweitakt-brennkraftmaschine und zweitakt-brennkraftmaschine
US20080011271A1 (en) * 2006-07-13 2008-01-17 Nils Kunert Method for operating an internal combustion engine
US20090178648A1 (en) * 2008-01-11 2009-07-16 Andreas Stihl Ag & Co. Kg. Method for operating an internal combustion engine
US20110004395A1 (en) * 2009-07-04 2011-01-06 Andreas Stihl Ag & Co. Kg Method for Operating an Internal Combustion Engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120140298A (zh) * 2025-05-06 2025-06-13 瑞诺(济南)动力科技有限公司 针对电动工程机械的流量需求控制方法及设备

Also Published As

Publication number Publication date
AT516758B1 (de) 2016-08-15
DE112016002694A5 (de) 2018-03-08
AT516758A4 (de) 2016-08-15

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