WO2016201468A1 - Verfahren zum betreiben eines durch eine drosselklappe steuerbaren zweitakt-ottomotors - Google Patents
Verfahren zum betreiben eines durch eine drosselklappe steuerbaren zweitakt-ottomotors Download PDFInfo
- Publication number
- WO2016201468A1 WO2016201468A1 PCT/AT2016/050193 AT2016050193W WO2016201468A1 WO 2016201468 A1 WO2016201468 A1 WO 2016201468A1 AT 2016050193 W AT2016050193 W AT 2016050193W WO 2016201468 A1 WO2016201468 A1 WO 2016201468A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- throttle valve
- injected
- cylinder
- air
- 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
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
- F02D41/10—Introducing corrections for particular operating conditions for acceleration
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
-
- 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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
-
- 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
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 on the speed and the throttle position, preprogrammed amount.
- fuel quantity to be injected can also be determined only insufficiently.
- sudden load increase in two-stroke gasoline engines for example, for off-road motorcycles, it is known (EP 0 761 952 A2) to monitor the angle of the throttle and in one of the speed and the throttle position dependent, pre-programmed quantity to increase injected fuel when the angle of the
- Throttle position is increased relative to the angle specified for the respective operating point by the driver, so that by a disproportionate increase in torque, the sudden load change can be considered.
- Fuel quantity changes the air-fuel ratio sensitive.
- the invention is therefore based on the object, a method for operating a two-stroke gasoline engine in such a way that even for rapid
- Load changes can be provided for the combustion advantageous air-fuel mixture.
- the invention solves the problem set by the fact that the pre-programmed fuel quantity to be injected into the cylinder depends on the adjustment speed and the adjustment direction of the throttle valve by means of these parameters
- Modified correction amounts to comply with predetermined air-fuel ratios and the corrected amount of fuel is injected into the cylinder.
- the invention is based on the finding that due to the long
- Throttle valve dependent amount of fuel is accurate to the cycle, it comes in comparison to a steady state operation to a richer air-fuel mixture.
- the rapid closing of the throttle results in a reverse relationship.
- the inertia of the air masses in the air path leads to the fact that the reduced fuel quantity due to the closing movement of the throttle valve initially leads to a leaning of the air-fuel mixture in the cylinder. It must therefore be pre-programmed for stationary operation of the two-stroke gasoline engine for the individual throttle positions fuel quantity in the case of rapid opening of the
- Throttle reduced, but increased in the case of a lock.
- Throttle position stored in stationary operation related fuel quantities, so that, depending on the adjustment and the
- Fuel quantities are injected into the cylinder to be able to comply with predetermined air-fuel ratios even during the rapid opening and closing of the throttle. With an adapted choice of the correction amounts, the respective air-fuel ratio can be changed arbitrarily.
- Throttle valve to be injected into the cylinder.
- Fig. 2 is a representation corresponding to Fig. 1 of the time course of the throttle position, for stationary operation
- Correction amount actually injected fuel amount, air fuel ratio, and engine speed when correcting the injected fuel amount
- Fig. 3 shows the timing of the parameters shown in FIG. 1, but for the rapid closing of the throttle and
- the curve 1 representing the time course of the throttle position ⁇ shows a steep rise between times ti and t2, which corresponds to a rapid opening of the throttle valve.
- This increase is followed by the preprogrammed fuel quantity q p related to stationary operation according to the curve 2, which indicates the amount of fuel injected into the cylinder due to a lack of correction.
- the speed n increases in the time interval between ti and t 2 , as can be seen from the curve 3.
- the air-fuel ratio ⁇ changes according to the curve 4.
- the preprogrammed amount of fuel q p is corrected during the rapid opening of the throttle flap according to FIG. 2 by a stored correction amount q k , which the on the air masses in the cylinder
- Fuel quantity q e is increased according to the preprogrammed amount of fuel qp accordingly, then, according to FIG. 4 again
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
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112016002697.8T DE112016002697A5 (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 |
|---|---|---|---|
| ATA50488/2015A AT516726B1 (de) | 2015-06-15 | 2015-06-15 | Verfahren zum Betreiben eines durch eine Drosselklappe steuerbaren Zweitakt-Ottomotors |
| ATA50488/2015 | 2015-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016201468A1 true WO2016201468A1 (de) | 2016-12-22 |
Family
ID=56368737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2016/050193 Ceased WO2016201468A1 (de) | 2015-06-15 | 2016-06-13 | Verfahren zum betreiben eines durch eine drosselklappe steuerbaren zweitakt-ottomotors |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT516726B1 (de) |
| DE (1) | DE112016002697A5 (de) |
| WO (1) | WO2016201468A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5239966A (en) * | 1991-02-20 | 1993-08-31 | Suzuki Corporation | Electronic control fuel injection apparatus for two-cycle engine |
| JPH0650202A (ja) * | 1992-07-31 | 1994-02-22 | Unisia Jecs Corp | 2サイクル内燃機関の燃料供給制御装置 |
| US6494188B1 (en) * | 1999-11-01 | 2002-12-17 | Sanshin Kogyo Kabushiki Kaisha | Fuel injection control system for marine engines |
Family Cites Families (2)
| 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 |
| DE69628706D1 (de) * | 1995-08-30 | 2003-07-24 | Yamaha Motor Co Ltd | Verfahren zur Regelung eines Innenverbrennungsmotors |
-
2015
- 2015-06-15 AT ATA50488/2015A patent/AT516726B1/de not_active IP Right Cessation
-
2016
- 2016-06-13 WO PCT/AT2016/050193 patent/WO2016201468A1/de not_active Ceased
- 2016-06-13 DE DE112016002697.8T patent/DE112016002697A5/de not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5239966A (en) * | 1991-02-20 | 1993-08-31 | Suzuki Corporation | Electronic control fuel injection apparatus for two-cycle engine |
| JPH0650202A (ja) * | 1992-07-31 | 1994-02-22 | Unisia Jecs Corp | 2サイクル内燃機関の燃料供給制御装置 |
| US6494188B1 (en) * | 1999-11-01 | 2002-12-17 | Sanshin Kogyo Kabushiki Kaisha | Fuel injection control system for marine engines |
Also Published As
| Publication number | Publication date |
|---|---|
| AT516726B1 (de) | 2016-08-15 |
| AT516726A4 (de) | 2016-08-15 |
| DE112016002697A5 (de) | 2018-03-08 |
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