DE3334622C2 - Test bench for internal combustion engines with a dynamometer - Google Patents
Test bench for internal combustion engines with a dynamometerInfo
- Publication number
- DE3334622C2 DE3334622C2 DE19833334622 DE3334622A DE3334622C2 DE 3334622 C2 DE3334622 C2 DE 3334622C2 DE 19833334622 DE19833334622 DE 19833334622 DE 3334622 A DE3334622 A DE 3334622A DE 3334622 C2 DE3334622 C2 DE 3334622C2
- Authority
- DE
- Germany
- Prior art keywords
- fuel consumption
- computer unit
- signal
- internal combustion
- test stand
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
- G01M15/044—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
- G01F9/008—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine where the other variable is the flight or running time
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Testing Of Engines (AREA)
Description
Die Erfindung betrifft einen Prüfstand für Brennkraftmaschinen mit einem Dynamometer.The invention relates to a test stand for internal combustion engines with a dynamometer.
Bei Entwicklungsarbeiten an Verbrennungsmotoren hat sich gezeigt, daß die Ermittlung des spezifischen Verbrauchs mit Streuungen* behaftet ist, die um so größer werden, je niedriger die Motorbelastung bzw. Drehzahl des untersuchten Betriebspunktes ist. Die Ursachen dafür liegen in Streuungen der Verbrauchsmessung sowie in unzureichend genauer Erfassung der Last bzw. Drehzahl, sowie in Schwankungen dieser Größen während der Meßzeit.During development work on internal combustion engines, it has been shown that the determination of the specific Consumption is afflicted with scatter *, which become greater the lower the engine load or speed of the investigated operating point. The reasons for this lie in the spread of the consumption measurement as well in insufficiently accurate detection of the load or speed, as well as fluctuations in these variables during the measuring time.
Aufgabe der Erfindung ist es, einen Prüfstand für eine Brennkraftmaschine zu schaffen, mit dem der spezifische Kraftstoffverbrauch exakt ermittelt und angezeigt wird.The object of the invention is to create a test stand for an internal combustion engine with which the specific Fuel consumption is precisely determined and displayed.
Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten.According to the invention, this object is achieved by the characterizing features of claim 1. Further, Features defining the invention are contained in the subclaims.
Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, daß mit den in der Rechnereinheit des Prüfstands verarbeiteten Werten der spezifische Verbrauch der Brennkraftmaschine mit einfachen MitThe advantages mainly achieved with the invention are to be seen in the fact that with the in the computer unit of the test bench processed values of the specific consumption of the internal combustion engine with simple mit
teln exakt erfaßt und angezeigt wird.is precisely recorded and displayed.
Ein Ausführungsbeispiel der Erfindung wird anhand einer Schemadarstellung gezeigt und nachstehend näher beschrieben. Darin sind die zu messenden Größen mit durchgezogenen Linien dargestellt, Signale und Daten mn unterbrochenen Linien und Steuergrößen mit strichpunktierten Linien.An exemplary embodiment of the invention is shown on the basis of a schematic representation and is shown in more detail below described. The quantities to be measured are shown with solid lines, signals and data mn broken lines and control variables with dash-dotted lines.
Die SchemadarsteHung zeigt einen Prüfstand 1 mit einer Brennkraftmaschine 2. An einer nicht gezeigten Abtriebswelle der Brennkraftmaschine 2 ist ein Dynamometer 3 angebracht, das ein Bremsmomentsignal Md abgibt Ferner ist an der Abtriebswelle ein Winkelgeber 4 vorgesehen, der den von der Abtriebswelle umfahrenen Winkel ermittelt und ein Winkelsignal Αφ erzeugt.The SchemadarsteHung shows a test stand 1 with an internal combustion engine 2. A dynamometer 3 is attached to an output shaft (not shown) of the internal combustion engine 2, which emits a braking torque signal Md Angle signal Αφ generated.
Das Bremsmomentsignal M/und das Winkeisignal^ werden einer Rechnereinheit 5 zugeführt. An die Rechnereinheit 5 ist ferner ein Kraftstoffverbrauchsmeßgerät 6 angeschlossen, das den Kraftstoffverbrauch der Brennkraftmaschine 2 erfaßt und ihr ein Kraftstoffverbrauchssignal m» bereitstellt.The braking torque signal M / and the angle signal ^ are fed to a computer unit 5. A fuel consumption meter is also attached to the computer unit 5 6 connected, which detects the fuel consumption of the internal combustion engine 2 and her a fuel consumption signal m »provides.
Eine Zeitgebereinheit 7 gibt ein Synchronsignal ts an die Rechnereinheit 5 und das Kraftstoffverbrauchsmeßgerät 6 zur Bestimmung einer Meßzeit ab.A timer unit 7 emits a synchronization signal t s to the computer unit 5 and the fuel consumption meter 6 for determining a measuring time.
Die Rechnereinheit 5 berechnet aus dem Bremsmomentsignal Md und dem Winkeisignal Αφ durch Integration die von der Brennkraftmaschine während der Meßzeit geleistete Arbeit A und daraus, zusammen mit dem Kraftstoffverbrauchssignal /η*, den spezifischen Kraftstoffverbrauch be. Die geleistete Arbeit A und derspezifische Kraftstoffverbrauch be werden von einer Anzeigeeinheit 8 dargestellt.The computer unit 5 calculates from the braking torque signal Md and the angle signal Αφ by integration the work A performed by the internal combustion engine during the measuring time and from this, together with the fuel consumption signal / η *, the specific fuel consumption be. The work A and the specific fuel consumption b e are shown by a display unit 8.
In weiterer Ausgestaltung der Erfindung werden von der Rechnereinheit 5 noch die Werte mittleres Moment Md, mittlere Drehzahl n, mittlere Leistung Pe und Kraftstoffverbrauch Vermittelt und auf der Anzeigeeinheit 8 angezeigt.In a further refinement of the invention, the computer unit 5 also transmits the values mean torque Md, mean speed n, mean power P e and fuel consumption and displays them on display unit 8.
Es ist ferner sinnvoll, die oben erwähnten Werte mittels eines an die Rechnereinheit 5 angeschlossenen Druckers 9 zu dokumentieren.It is also useful to connect the above-mentioned values to the computer unit 5 by means of a device Document printer 9.
Die Zeitgebereinheit 7 ist im Ausführungsbeispiel unabhängig von der Rechnereinheit 5 und dem Kraftstoffverbrauchsmeßgerät 6 dargestellt; die kann aber auch in eines dieser Geräte integriert sein.The timer unit 7 is independent in the exemplary embodiment represented by the computer unit 5 and the fuel consumption meter 6; but it can also be in one of these devices can be integrated.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833334622 DE3334622C2 (en) | 1983-09-24 | 1983-09-24 | Test bench for internal combustion engines with a dynamometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833334622 DE3334622C2 (en) | 1983-09-24 | 1983-09-24 | Test bench for internal combustion engines with a dynamometer |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3334622A1 DE3334622A1 (en) | 1985-04-11 |
DE3334622C2 true DE3334622C2 (en) | 1985-07-11 |
Family
ID=6209971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833334622 Expired DE3334622C2 (en) | 1983-09-24 | 1983-09-24 | Test bench for internal combustion engines with a dynamometer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3334622C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4125589A1 (en) * | 1991-08-02 | 1993-02-04 | Werner Prof Dr I Schiroslawski | Measuring specific fuel consumption and torque of motor vehicle IC engine - setting engine speed at full throttle by braking then idling while measuring average consumption and crankshaft acceleration |
US7353804B2 (en) * | 2002-10-15 | 2008-04-08 | Husqvarna Outdoor Products Inc. | Method and arrangement for achieving an adjusted engine setting utilizing engine output and/or fuel consumption |
CN101893467A (en) * | 2010-07-28 | 2010-11-24 | 康明斯东亚研发有限公司 | Method for measuring fuel consumption of medium and heavy vehicles |
-
1983
- 1983-09-24 DE DE19833334622 patent/DE3334622C2/en not_active Expired
Non-Patent Citations (1)
Title |
---|
NICHTS-ERMITTELT |
Also Published As
Publication number | Publication date |
---|---|
DE3334622A1 (en) | 1985-04-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19742627C2 (en) | Vehicle driving behavior investigation system | |
EP0409013B1 (en) | Vehicle exhaust gas measuring procedure and device | |
DE69806113T2 (en) | Method for determining the torque in a screw connection produced by means of a rotary screw connection and rotary impact tool for generating a screw connection with a predetermined torque | |
DE102014113905B4 (en) | Method for calculating a torque of a transmission clutch | |
DE102005060937A1 (en) | Engine power calibration systems | |
DE10162786A1 (en) | Method for determining performance, measuring device and dynamometer for a test object | |
DE2735925A1 (en) | TESTING DEVICE FOR MOTOR VEHICLES | |
EP3067681B1 (en) | Method for operating an engine or power train test stand | |
DE69027410T2 (en) | Overload monitoring system for electric motor in systems simulating vehicle internal combustion engines | |
EP0696729A2 (en) | Procedure and device for simulating mass in a fixed test bench | |
DE3808013C1 (en) | ||
DE3334622C2 (en) | Test bench for internal combustion engines with a dynamometer | |
DE2126908C3 (en) | Device for determining a force or torque delivered by a motor to an external load | |
DE4435654A1 (en) | Device for detecting the operating state, in particular misfires of a motor vehicle, and detection method for this | |
EP0098570B1 (en) | Arrangement for testing a torque generator | |
EP0478566B2 (en) | Process and device for controlling the rotation speed in agitating ball mills | |
DE69111978T2 (en) | MOTOR VEHICLE OUTPUT INDICATOR. | |
DE29905255U1 (en) | Installation for the investigation of the limit condition of periodontitis by natural frequency | |
DE68901682T2 (en) | METHOD AND DEVICE FOR DETERMINING THE SPECIFIC FUEL CONSUMPTION OF AN INTERNAL COMBUSTION ENGINE. | |
DE3428755C2 (en) | ||
DE2407031B2 (en) | Method and device for determining the emission content of the exhaust gases of a motor vehicle | |
AT755U1 (en) | METHOD AND DEVICE FOR DIAGNOSING MULTI-CYLINDER INTERNAL COMBUSTION ENGINES | |
DE10162787A1 (en) | Procedure for determining performance and dynamometer for a test object | |
DE102015120263B4 (en) | Method for determining wear, measuring device, control device therefor, and drive device comprising the control device | |
DE69832881T2 (en) | SYSTEM AND METHOD FOR MONITORING VEHICLES |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8331 | Complete revocation |