WO2003096794A1 - Procede de commande du moteur d'un engin forestier et engin forestier - Google Patents

Procede de commande du moteur d'un engin forestier et engin forestier Download PDF

Info

Publication number
WO2003096794A1
WO2003096794A1 PCT/FI2003/000387 FI0300387W WO03096794A1 WO 2003096794 A1 WO2003096794 A1 WO 2003096794A1 FI 0300387 W FI0300387 W FI 0300387W WO 03096794 A1 WO03096794 A1 WO 03096794A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
forest machine
trunk
tree trunk
manipulation
Prior art date
Application number
PCT/FI2003/000387
Other languages
English (en)
Inventor
Juha Järvinen
Olli Hankamäki
Pekka Karjalainen
Original Assignee
Timberjack Oy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8563981&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2003096794(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Timberjack Oy filed Critical Timberjack Oy
Priority to DE10392696T priority Critical patent/DE10392696T5/de
Priority to AU2003227795A priority patent/AU2003227795A1/en
Priority to CA2486278A priority patent/CA2486278C/fr
Publication of WO2003096794A1 publication Critical patent/WO2003096794A1/fr
Priority to SE0402685A priority patent/SE527297C2/sv

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/08—Felling trees
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/095—Delimbers

Definitions

  • the invention relates to a method in controlling the engine of a forest machine according to the preamble of claim 1.
  • the invention also relates to a forest machine complying with said method, according to the preamble of claim 9.
  • a boom assembly is used, whose end is provided with a harvesting device, so-called harvesting head.
  • a harvesting head By means of the harvesting head, an upright growing tree trunk can be cut, felled, delimbed, and further cut into logs of desired length.
  • the tree trunks thus treated can be collected from the terrain aboard a moving forest machine equipped with a loading grapple, i.e. a forwarder. In the load space of the forwarder, the tree trunks are transported further, for example, to the side of a drivable forest road.
  • the primary power source used for forest machines of the above-mentioned type is typically a diesel engine which further rotates a hydraulic pump.
  • the purpose of the hydraulic pump is to convert the mechanical energy produced by the diesel engine (rotational speed, torque of the engine) to hydraulic energy (volume flow, pressure produced by the pump).
  • the hydraulic energy contained in the hydraulic system of the forest machine is further used to drive the actual hydraulic actuators of the forest machine.
  • the hydraulically driven actuators for example in a harvester, include hydraulic driving motors coupled to the wheels, hydraulic cylinders of the frame steering, hydraulic cylinders moving the boom assembly, as well as various hydraulic cylinders and motors included in the harvesting head.
  • To the diesel engine used as the primary power source can also be coupled a number of various hydraulic pumps which may be placed, for example, one after the other on the same driving shaft. Separate hydraulic pumps may be provided, for example, for the driving motors, the boom assembly, or the harvesting head.
  • the diesel engine is arranged to rotate the hydraulic pump/pumps substantially at a constant speed of rotation when the forest machine is in operation.
  • the hydraulic pump driven at a constant speed of rotation is, in turn, arranged to provide either a given constant pressure level on the main line of the hydraulic system or to operate in a load-sensing manner, wherein the main line is always supplied with a pressure level and a volume flow according to the need.
  • hydraulic power is taken, for example, by the hydraulic actuators of the harvesting head via their respective control valves according to their respective needs.
  • the speed of rotation of the diesel engine is conventionally kept constant with a mechanical governor in connection with the injection pump of the engine, to increase or decrease the fuel supply to the engine, if necessary. Consequently, the governor thus, in a way, increases or disengages the throttle of the engine to maintain a constant speed of rotation when the output of the diesel engine required by the hydraulic pump varies in different situations.
  • said restriction of the power of the hydraulic system is used, if necessary; in other words, the volume flow (control angle) produced by the hydraulic pump is reduced to prevent a situation in which the torque of the diesel engine required by the hydraulic pump exceeds the maximum capacity of the engine, and the speed of rotation of the diesel engines may drop.
  • Harvesting can be divided further into different steps which include, for example, the movement of the boom and the manipulation of a tree trunk by felling, cross-cutting and delimbing.
  • steps which include, for example, the movement of the boom and the manipulation of a tree trunk by felling, cross-cutting and delimbing.
  • felling and cross-cutting are Operations which will temporarily require a high hydraulic power, whereas the movement of the empty boom without a tree trunk in the grip of the harvesting head, the working machine staying still, will only require a relatively low hydraulic power.
  • the speed of rotation of the diesel engine must not drop during the felling and cutting of trees which temporarily require high hydraulic powers, because this will significantly slow down the harvesting or affect directly on the quality of the timber to be manipulated.
  • a drop in the speed of rotation of the engine for example, during cross-cutting, may cause a temporary deceleration in the sawing, and a cracking of the tree trunk in the longitudinal direction when under torque and supported by the harvesting head, which reduces significantly the value of the trunk being manipulated.
  • the feeding of the trunk at the harvesting head may, for example, stop at a particularly thick branch because of insufficient engine power.
  • the category of the size and capacity of the diesel engine used as the primary power source must be, in practice, selected so that the maximum output of the engine is sufficient for performing even the most power demanding operations, such as felling and cross-cutting, without recurrent unde- sired drops in the speed of rotation of the engine due to overloading.
  • the power source must also be capable of overcoming situations in which, for example, several hydraulic functions of the boom and the harvesting head are applied simultaneously during the manipulation of a heavy trunk. Consequently, the selection falls on a diesel engine whose power and torque properties provide an optimum compromise of the needs occurring in practice.
  • the engine is only aimed at keeping its speed of rotation at a constant level, corresponding to the respective valid need for the speed of rotation, wherein the power output of the engine, in practice, also follows the engine output required by the hydraulic pump at each time.
  • the readiness for power production is always at a maximum level in the arrangements of prior art. In other words, the engine is ready to produce more power up to its maximum capacity only by increasing the throttle, if this is required by the power intake of the hydraulic pump from the shaft of the engine.
  • a mode of the forest machine is known from prior art, in which the driver of the harvester when in light work, for example working in a stand marked for cutting and containing only relatively small trunks, manually adjusts the level of the constant speed of rotation used in the diesel engine to a lower constant level than normally in a situation when the maximum output of the engine is not likely to ' be ' > used.
  • This procedure reduces the engine's readiness for power production and thereby reduces the total fuel consumption of the working machine, but it also significantly increases the risk of an undesired drop in the speed of rotation of the engine, for example, when the harvester hits particularly strong points in the trunk or branches during delimbing or cross-cutting.
  • the procedure also decelerates the functions of the working machine as the continuously more slowly rotating hydraulic pump produces, on the desired pressure level, volume flows which are smaller than normally.
  • a reduction in the speed of rotation from the range of the nominal speed of rotation will also involve shifting off the range of the best efficiency of the engine.
  • the driver cannot manually adjust the level of the speed of rotation continuously as the work proceeds, but he must select a constant rotation speed level suitable for the job.
  • the invention also relates to a forest machine implementing the method.
  • the basic idea of the invention is to optimize, by prediction, the control parameters of the primary power source of a forest machine, preferably a diesel engine equipped with an electronic control unit ECU, by adjusting the power source to produce a suitable and sufficient power level needed for each operation to be performed by the forest machine, without maintaining a redundant readiness for power production, wherein said operations can be performed more economically than in prior art and causing as little emissions to the environment as possible.
  • a forest machine preferably a diesel engine equipped with an electronic control unit ECU
  • a given partial power level of the engine for example 50 % of the maximum power indicated for the engine
  • the fuel consumption of the engine is different, even though the same partial output of 50 % were taken from the engine in all these situations.
  • the readiness of the engine for power production is also different with different values of the control parameters.
  • the readiness for power production refers, first of all, to the maximum output of the engine with said values of the control parameters, but also to the way in which the engine reacts, i.e.
  • the above- mentioned selection of the control parameters of the engine must be essentially made by predicting the operations of manipulating a tree trunk with the forest machine, wherein it is possible to minimize the risk of an unnecessary drop in the speed of rotation of the engine during said manipulating operations.
  • the method according to the invention is primarily characterized in what will be presented in the characterizing part of claim 1.
  • the forest machine according to the invention is primarily characterized in what will be presented in the characterizing part of claim 9.
  • the invention relates particularly to such forest machines, for example harvesters, which are used for the manipulation of tree trunks on a terrain in such a way that the properties of the tree trunk subject to manipulating operations at the time are determined by means of one or more measurements of said tree trunk by the forest machine and/or by means of information entered by the driver of the forest machine into the systems of the forest machine.
  • One example of such measurements is the measure- ment of the felling diameter of the tree trunk by the harvesting head when the harvesting head grips the upright growing tree trunk for the felling of the trunk.
  • the diameter and the length of the trunk can be measured in ways known as such, also when the harvesting head shifts its grip of the tree trunk during delimbing and cross-cutting of the trunk.
  • the driver of the harvester in turn, can, in a way known as such, enter information about the wood species of the trunk to be manipulated at the time, into the system of the harvester at the beginning of the manipulation of said trunk.
  • the harvester can, in a way known as such, determine, for example, the esti- mated conicality and length of the tree trunk, and by using this so- called trunk prognosis determined for the single trunk, mark said tree trunk for cross-cutting, i.e. make a sawing layout for cutting the trunk in an optimal way into wood products for different classes of length and diameter.
  • the properties of a single tree trunk are used to estimate the power levels required by the manipulating operations to be carried out on said tree trunk by prediction, i.e. already before said manipulating operations are started.
  • manipulating operations may include, for example in a harvester, the sawing for felling the tree trunk during harvesting, and the delimbing and cross-cutting of the trunk according to the sawing layout.
  • the present invention is characterized in that information, such as a trunk prognosis, collected of a single tree trunk under manipulation into the system of the forest machine is used for estimating by prediction in advance those power levels of the actuators of the forest machine, which will be required for the operations to be carried out for the trunk.
  • the control parameters of the engine are optimized in view of this single power level only.
  • the power levels required for the manipulation of a tree trunk are estimated for several operations to be carried out on the trunk separately.
  • Such operations include, for example, sawing for felling, feedings of the trunk required by delimbing at the harvesting head, and cross-cuttings of the trunk.
  • control parameters For these operations, several values are determined for control parameters, wherein the operation of the engine is optimized for each trunk and further for each operation.
  • each operation to be carried out for the tree trunk is performed by using separately optimized control parameters of the engine.
  • the engine of the forest machine is a diesel engine, in which the fuel supply is controlled by an electronic control unit ECU instead of a mechanical control device.
  • ECU electronice control unit
  • Said control graphs contain informaton relating to the scheduling and feed volumes related to the fuel supply of the engine, and the different control graphs can thus be used to affect the efficiency of the engine and further the maximum output to be achieved with said settings of the engine and the behaviour of the engine in situations of sudden changes in the load.
  • the last mentioned adjustment, affecting the sensibility of the engine to react, is commonly called droop control.
  • the speed of rotation of the engine is automatically selected by prediction according to the situation.
  • the operation of the engine is optimized by actively adjusting the settings of the charger of the engine, typically a variable geometry turbocharger (variable nozzle turbocharger).
  • the present invention provides significant advantages to prior art. Thanks to the invention, it is possible to significantly reduce the fuel consumption of the forest machine and thereby also the exhaust gas emissions caused by the forest machine. As the control parameters and the speed of rotation of the engine are automatically selected to be suitable for each situation, also the mechanical loading and wear caused to the engine and the other devices and parts of the forest machine are decreased, which reduces the need for maintenance of the forest machine and prolongs the lifetime of its engine and devices.
  • the invention also contributes to the reduction of noise levels caused by the forest machine, which is important for the working environment as well as for the driver of the machine.
  • Fig. 1 shows, in a principle view, the functions of a forest machine of prior art
  • Fig. 2 shows, in a principle view, the functions of a forest machine according to the invention.
  • Fig. 3 shows, in a principle chart, the optional torque graphs of an engine equipped with an electronic control unit.
  • Figure 1 shows, in a principle view, the functions of a forest machine of prior art.
  • Figure 2 shows, in a corresponding manner, the functions of a forest machine according to the invention.
  • Figs. 1 and 2 only such functions are presented as examples which are essential for understanding the principles of the present invention.
  • the hydraulic system of the forest machine is illustrated in a very simplified manner and not in its entirety for all its parts but for those parts only which are necessary for describing the principles of the invention.
  • the engine 10 of the forest machine which is typically a turbo- charged diesel engine, is arranged, according to prior art, to rotate, at a given constant speed of rotation, a hydraulic pump 11 which provides the main line 12 of the hydraulic system with either a given substantially constant pressure level or, under a load-sensing control, a given pressure level and volume flow.
  • the constant pressure level is typically applied in the use of the functions of the harvesting head 21 , and there may also be several different constant pressure levels to be selected for different purposes.
  • the load-sensing control is typically used in connection with the functions of the boom 20.
  • the speed of rotation of the engine 10 is set to a given constant level by means of measurement 13 of the speed of rotation and a control device 14 for the engine.
  • the measurement 13 of the speed of rotation and the operation of the control device 14 of the engine are connected to a mechanical governor for the injection pump of the diesel engine.
  • the pressure level in the main line 12 is adjusted by means of a pressure measurement 15 and a control device 16 affecting the hydraulic pump 11.
  • the hydraulic power is transferred further via control valves V-
  • the control valve N ⁇ -VN for a single actuator H ⁇ HM controls, on the basis of the control signal 23 controlling the same, the volume flow and pressure of hydraulic fluid from the main line 12 to the respective actuator according to the operation performed by the actuator at the time.
  • control lines are also typically coupled to the control device 16 of the hydraulic pump 11 , wherein these control lines are used to control the hydraulic system to operate either at a given constant pressure level or in a load-sensing way, depending on the control valve N -VN and the function used at the time.
  • Said control lines which are not shown in Figs. 1 and 2, can be implemented either hydraulically or electrically.
  • the measuring and control system 22 of the forest machine is arranged, in ways known as such, to control the operations of the for- est machine according to control commands 25 from the driver.
  • the measuring and control system 22 draws up a trunk prognosis for the trunk to be manipulated, and by utilizing the trunk prognosis, marks the trunk for cross-cutting, i.e., divides it in a given manner into wood products of different classes in length and diameter.
  • the measuring and control system 22 helps the driver, in ways known as such, for example by adjusting the functions of the harvesting head 21 in such a way that during the delimbing and cutting of the trunk, the trunk is automatically stopped for cross-cutting at locations complying with the sawing layout (sawing window), wherein the driver only needs to accept the cutting to be performed at the proposed location. If necessary, the driver can transfer the cutting to take place at a desired location, if the trunk has local defects, such as crooks, which have not been taken into account in the sawing layout complying with the trunk prognosis.
  • the measuring functions of the harvesting head 21 include the measurement of the diameter of the trunk under manipulation, and the measurement of the length of the trunk during the forward feeding of the trunk at the harvesting head 21.
  • the first trunk prognosis of the trunk to be manipulated is obtained when the harvesting head 21 of the forest machine grips the upright growing trunk at its butt end for a felling cut.
  • the driver preferably enters information in the measuring and control system 22 about the wood species of the trunk to be manipulated.
  • the trunk prognosis and the marking for cross-cutting can be made more specific during the manipulation of the trunk when more detailed information is obtained e.g. on the conicality of the trunk.
  • the measuring and control system 22 can, in a way known as such, utilize information stored in its memory about trunks manipulated previously on said lot. This information can be used to specify, for example, the estimate on the conicality of the trunk and/or the knottiness of the trunk.
  • the sawing layout made on the basis of the trunk prognosis, can, on one hand, be based on so-called value marking for cross-cutting, to cut as valuable pieces of the trunk as possible.
  • the sawing layout can be implemented by using so-called distribution marking for cross-cutting, wherein the aim is to produce wood products belonging to different classes of length and diameter in a given proportion.
  • the sawing layout may be based on cutting the trunk to pieces of equal length.
  • the present invention is characterized in that information collected, by methods known as such, in the measuring and control system 22 about the single tree trunk to be manipulated, for example a sawing layout made on the basis of the trunk prognosis, is utilized for the estimation in advance of those power levels of the actuators H ⁇ -H N of the forest machine which will be required by the manipulating operation to be carried out on the trunk.
  • the forest machine of the invention shown in Fig. 2, comprises a power control system 30 implementing the method according to the invention, which is arranged to control the functions of the engine in a way to be described in more detail below.
  • the power control system 30 is connected to a data transmission connection 31 with the measuring and control system 22 of the forest machine in such a way that the properties of the tree trunk under manipulation, determined at the beginning of its manipulation and/or updated during its manipulation, are available to the power control system 30.
  • the power control system 30 also receives information about the operations to be carried out next to said trunk, for example via the sawing layout formed by the measuring and control system 22. According to the invention, this information is used by the power control system 30 to estimate the power levels required for the manipulating operations to be carried out on said tree trunk before said manipulating operations are started.
  • the power control system 30 further optimizes the functions of the engine 10 by means of the control 32 in such a way that the suitable control parameters of the engine 10, such as the speed of rotation level, the graphs controlling the fuel supply, the settings of the supercharger, and the droop control, have been set available by prediction even before said operation is started.
  • the timing data required for said prediction is obtained by the power control sys- tern 30 from the measuring and control system 22 via the data transmission connection 31.
  • the engine 10 is a diesel engine equipped with an electronic control unit ECU, wherein the function and nature of the engine 10 can be optimized by selecting the most suitable of the control data stored in the form of graphs or charts in the electronic control unit ECU.
  • Figure 3 shows, in a principle view, some torque graphs M ⁇ M N as a function of the speed of rotation of the engine.
  • the different torque graphs M ⁇ M N are obtained in a way known as such by means of con- trol data of the fuel supply (quantity injected, timing of injection) stored in the memory of the electronic control unit ECU.
  • the engine can be set to function according to a given torque graph by changing the control parameters of the engine electrically in a way known as such.
  • the engine gives different maximum outputs, and also the efficiency of the engine varies according to the graph selected at the time.
  • the droop control of the engine can be changed electrically to affect the sensitivity of the engine to react to changes in the loading of the engine. At low droop values, the speed of rotation of the engine can drop only a little by an increase in the load, but at high droop values, the speed of rotation of the engine can, in a corresponding manner, temporarily drop lower when the load is suddenly increased.
  • the function of the supercharger can also be controlled by prediction according to the invention.
  • the electronic control unit ECU of the engine can be fitted to control the operation of such a variable geometry turbocharger in such a way that the supercharging pressure produced by the supercharger is suitably increased in advance before the engine is loaded.
  • An increase in the supercharging pressure also makes it possible to increase the fuel quantity supplied to the engine faster, wherein the engine's capacity to react to changes in the load is substantially improved.
  • the control parameters of the engine can be used to set, for example, the torque graph used by the engine, the droop control, the settings of the supercharger, as well as the level of constant speed of rotation to a suitable level in advance, wherein said manipulating operation can be performed at an optimum efficiency but still avoiding an excessive undesired variation in the speed of rotation of the engine during said manipulating operation.
  • the control data for the fuel supply to the engine stored in the form of charts or graphs in the control unit ECU, are typically entered by the engine manufacturer. These charts, which have been stored in advance in the memory of the control unit ECU and which can be selected by means of the control parameters, make it possible to test the emission and noise levels of the engine at different modes and have them approved in advance by authorities.
  • the invention is not limited solely to the selection of various pre-programmed charts and graphs stored in advance in the control unit ECU, but it is also possible that the control parameters are used to directly affect the fuel injection quantities, the timing of injection, or the setting of the supercharger in real time.
  • the power control system 30, in a way, assumes some of the functions which are normally performed by the control unit ECU.
  • control parameters of the engine 10 and the maximum power level determined by means of them are set constant for the time of the whole harvesting of a single tree trunk.
  • control parameters of the engine can be changed separately, for example for the felling, delimbing and cross- cutting of a single tree trunk.
  • the weigt of the trunk and thereby the power levels required for moving it can be estimated, for example, on the basis of the trunk prognosis and the wood species.
  • the change in the weight of the remaining trunk can be estimated by means of the trunk prognosis when the cross-cutting of the trunk proceeds according to the sawing layout.
  • the automatic selection of the control parameters of the engine of the forest machine according to the invention can be made, for example, solely on the basis of the felling diameter of the trunk and/or the wood species of the trunk.
  • the selection of the power levels is made on the basis of the trunk prognosis and/or the sawing or manipulating layout of the trunk, derived from the trunk prognosis.
  • the delays in the different control methods are taken in account.
  • the selection of the different torque graphs M ⁇ M N or droop values by electrically affecting the electronic control unit ECU is fast and has a substantially immediate effect on the function of the engine.
  • the effect of adjusting the speed of rotation of the diesel engine is distinctly slower, the delay in major changes in the speed of rotation being even in the order of a few seconds.
  • the delays typically fall in the middle ground between the above-mentioned delays.
  • the power control system is utilized when the forest machine is transferred from one harvesting location to another, it is possible to select control parameters for the engine which are economically suitable for the transport.
  • the selection of the power level and thereby the control parameters of the engine can also be made by the driver of the forest machine who may, in certain situations, set edge conditions for the automatic control of the engine by the power control system 30, or the driver may also, if necessary, manually by-pass the power control system 30, forcing the forest machine to a specific power control mode.
  • the power control system 30 is arranged to give the driver of the forest machine feedback of the fuel consumption of the forest machine, wherein the driver is motivated to work in such a way that the fuel consumption remains as low as possi- ble.
  • the present invention it is possible to significantly reduce the fuel consumption of the forest machine per produced cubic metre of timber. This reduces the operating costs of the machine, but furthermore, par- ticularly the emissions from the forest machine to the environment are also distinctly reduced. This is important, because in view of the whole life cycle of the forest machine, about 80 % of the environmental load caused by the forest machine is due to emissions from the diesel engine. Furthermore, the invention also reduces the loading and wear- ing of the engine and devices of the forest machine, as well as reduces the noise level caused by the forest machine.
  • these power levels do not need to be determined, for example, in kilowatts or corresponding absolute values, but it is also possible to use other parameters which describe the power demand and the loading of the engine caused by the operation.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Cette invention concerne un procédé de commande d'un moteur (10) utilisé comme principale source d'énergie d'un engin forestier, lequel engin forestier manipule des troncs d'arbre sur un terrain de telle sorte que les propriétés du tronc d'arbre susceptible d'être manipulé à ce moment là sont déterminées au moyen d'une ou plusieurs mesures dudit tronc d'arbre effectuées par ledit engin forestier et/ou au moyen de données entrées par le conducteur de l'engin forestier dans celui-ci. Selon cette invention, les propriétés d'un seul tronc d'arbre, déterminées au début de sa manipulation et/ou mises à jour pendant la manipulation dudit tronc d'arbre, sont utilisées pour évaluer, automatiquement et au préalable, un ou plusieurs niveaux de puissance requis par l'une ou plusieurs des opérations de manipulation devant être exécutées sur ledit tronc d'arbre avant que ces troncs d'arbre ne soient manipulés. Ainsi, la fonction du moteur (10) de l'engin forestier est optimisée, automatiquement et en fonction du tronc, par l'attribution des paramètres de commande du moteur de sorte qu'on obtienne le ou les niveaux de puissance requis pour la manipulation du tronc d'arbre par l'optimisation du rendement du moteur. Cette invention porte également sur un engin forestier qui met en oeuvre ce procédé.
PCT/FI2003/000387 2002-05-21 2003-05-20 Procede de commande du moteur d'un engin forestier et engin forestier WO2003096794A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE10392696T DE10392696T5 (de) 2002-05-21 2003-05-20 Verfahren zur Steuerung eines Motors einer Forstmaschine und eine Forstmaschine
AU2003227795A AU2003227795A1 (en) 2002-05-21 2003-05-20 A method in controlling an engine of a forest machine and a forest machine
CA2486278A CA2486278C (fr) 2002-05-21 2003-05-20 Procede de commande du moteur d'un engin forestier et engin forestier
SE0402685A SE527297C2 (sv) 2002-05-21 2004-11-05 Förfarande för reglering av en motor hos en skogsmaskin, samt en skogsmaskin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20020957 2002-05-21
FI20020957A FI111183B (fi) 2002-05-21 2002-05-21 Menetelmä metsätyökoneen moottorin ohjauksessa ja metsätyökone

Publications (1)

Publication Number Publication Date
WO2003096794A1 true WO2003096794A1 (fr) 2003-11-27

Family

ID=8563981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2003/000387 WO2003096794A1 (fr) 2002-05-21 2003-05-20 Procede de commande du moteur d'un engin forestier et engin forestier

Country Status (6)

Country Link
AU (1) AU2003227795A1 (fr)
CA (1) CA2486278C (fr)
DE (1) DE10392696T5 (fr)
FI (1) FI111183B (fr)
SE (1) SE527297C2 (fr)
WO (1) WO2003096794A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1954931A1 (fr) * 2005-12-02 2008-08-13 Ponsse Oyj Procede de commande d'une source d'energie de machine d'exploitation forestiere
WO2008145817A1 (fr) * 2007-05-28 2008-12-04 Ponsse Oyj Procédé et agencement associé à une source de puissance d'une machine forestière
RU2522525C2 (ru) * 2012-11-01 2014-07-20 Лев Николаевич Шобанов Способ наведения машины на объект
WO2015094073A1 (fr) * 2013-12-20 2015-06-25 Komatsu Forest Ab Indication de dents non affûtées au niveau d'une scie à disque par mesure de vitesse de rotation
CN109209657A (zh) * 2017-07-04 2019-01-15 安德烈·斯蒂尔股份两合公司 获取调节园艺和/或林业设备的可调节部件的信息的方法、园艺和/或林业设备及其系统
US20210360880A1 (en) * 2018-08-30 2021-11-25 Ponsse Oyj Method for controlling power-transmission gear, system, and forest machine
EP3457836B1 (fr) * 2016-05-17 2022-03-02 Log Max AB Abatteuse-ébrancheuse, système de surveillance d'abattage-ébranchage, tête d'abattage-ébranchage, procédé de commande de fonctionnement d'une tête d'abattage-ébranchage, et procédé de surveillance de fonctionnement d'abatteuse-ébrancheuse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016003752B4 (de) 2016-03-26 2022-06-09 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung eines Kraftfahrzeugs sowie entsprechende Antriebseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE388752B (sv) * 1975-03-06 1976-10-18 Volvo Bm Anordning for kapning av tredstammar
US5394342A (en) * 1993-02-26 1995-02-28 Macmillan Bloedel Limited Log scanning
WO1999012410A1 (fr) * 1997-09-09 1999-03-18 Rolf Modd Dispositif commandant un appareil d'usinage
WO2002045925A1 (fr) * 2000-12-07 2002-06-13 Tähkä Oy Appareil et procede pour la manutention de grumes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE388752B (sv) * 1975-03-06 1976-10-18 Volvo Bm Anordning for kapning av tredstammar
US5394342A (en) * 1993-02-26 1995-02-28 Macmillan Bloedel Limited Log scanning
WO1999012410A1 (fr) * 1997-09-09 1999-03-18 Rolf Modd Dispositif commandant un appareil d'usinage
WO2002045925A1 (fr) * 2000-12-07 2002-06-13 Tähkä Oy Appareil et procede pour la manutention de grumes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1954931A1 (fr) * 2005-12-02 2008-08-13 Ponsse Oyj Procede de commande d'une source d'energie de machine d'exploitation forestiere
EP1954931A4 (fr) * 2005-12-02 2009-06-03 Ponsse Oyj Procede de commande d'une source d'energie de machine d'exploitation forestiere
WO2008145817A1 (fr) * 2007-05-28 2008-12-04 Ponsse Oyj Procédé et agencement associé à une source de puissance d'une machine forestière
RU2522525C2 (ru) * 2012-11-01 2014-07-20 Лев Николаевич Шобанов Способ наведения машины на объект
WO2015094073A1 (fr) * 2013-12-20 2015-06-25 Komatsu Forest Ab Indication de dents non affûtées au niveau d'une scie à disque par mesure de vitesse de rotation
AU2013408441B2 (en) * 2013-12-20 2018-05-10 Komatsu Forest Ab Indicating of unsharp teeth at a disc saw by measuring of speed of rotation
US10206339B2 (en) 2013-12-20 2019-02-19 Komatsu Forest Ab Indicating of unsharp teeth at a disc saw by measuring of speed of rotation
EP3457836B1 (fr) * 2016-05-17 2022-03-02 Log Max AB Abatteuse-ébrancheuse, système de surveillance d'abattage-ébranchage, tête d'abattage-ébranchage, procédé de commande de fonctionnement d'une tête d'abattage-ébranchage, et procédé de surveillance de fonctionnement d'abatteuse-ébrancheuse
US11457573B2 (en) 2016-05-17 2022-10-04 Log Max Ab Tree harvesting machine, a tree harvesting monitoring system, a tree harvesting head, a method for controlling operation of a tree harvesting head and a method for monitoring operation of a tree harvesting machine
CN109209657A (zh) * 2017-07-04 2019-01-15 安德烈·斯蒂尔股份两合公司 获取调节园艺和/或林业设备的可调节部件的信息的方法、园艺和/或林业设备及其系统
CN109209657B (zh) * 2017-07-04 2023-03-28 安德烈·斯蒂尔股份两合公司 获取调节园艺和/或林业设备的可调节部件的信息的方法、园艺和/或林业设备及其系统
US20210360880A1 (en) * 2018-08-30 2021-11-25 Ponsse Oyj Method for controlling power-transmission gear, system, and forest machine

Also Published As

Publication number Publication date
FI111183B (fi) 2003-06-13
SE0402685D0 (sv) 2004-11-05
DE10392696T5 (de) 2005-05-25
SE527297C2 (sv) 2006-02-07
AU2003227795A1 (en) 2003-12-02
SE0402685L (sv) 2004-11-05
CA2486278C (fr) 2012-03-13
CA2486278A1 (fr) 2003-11-27
FI20020957A0 (fi) 2002-05-21

Similar Documents

Publication Publication Date Title
US7891182B2 (en) Work machine, control system and method for controlling an engine in a work machine
US5588474A (en) Feed rate control system for stump cutters
RU2429363C2 (ru) Способ управления источником мощности машины, используемой в лесном хозяйстве
CA2486278C (fr) Procede de commande du moteur d'un engin forestier et engin forestier
US9353673B2 (en) Engine fan control system and method
US20200114992A1 (en) Tension adjustment system
US20100235066A1 (en) System and method for engine load management
EP3003011B1 (fr) Procédé et aménagement dans une unité de travaux forestiers
US9416779B2 (en) Variable pressure limiting for variable displacement pumps
US8973536B2 (en) Engine compensation for fan power
US20040107925A1 (en) Control system for outboard motor
US11560829B2 (en) Recirculation system for a power system that includes a plurality of turbochargers
EP2949533B1 (fr) Procede pour commander le moteur primaire d'une machine de transport de charge, systeme de commande pour le moteur primaire d'une machine de transport de charge et machine de transport de charge
US5311854A (en) Two-cycle internal combustion engine with reduced unburned hydrocarbons in the exhaust gas
JP4355610B2 (ja) エンジン制御装置
GB2128718A (en) Drive unit consisting of an internal combustion engine and a steplessly adjustable hydrostatic transmission
CN115506443B (zh) 一种电动装载机电机多模式控制装置及控制方法
SE2350809A1 (sv) Metod för att driva en hydraulisk drivning och hydraulisk drivning
JP2009085066A (ja) 作業車
EP2329123A1 (fr) Gestion d'un moteur à deux temps comprenant un turbocompresseur

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 04026852

Country of ref document: SE

WWP Wipo information: published in national office

Ref document number: 04026852

Country of ref document: SE

WWE Wipo information: entry into national phase

Ref document number: 2486278

Country of ref document: CA

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP