CN100410515C

CN100410515C - Engine control system

Info

Publication number: CN100410515C
Application number: CNB2005101155994A
Authority: CN
Inventors: 福岛友树; 前川佳则; 松田迅人
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2004-11-05
Filing date: 2005-11-07
Publication date: 2008-08-13
Anticipated expiration: 2025-11-07
Also published as: JP2006132671A; CN1769656A; JP4402567B2

Abstract

The invention provides a control device for an engine capable of improving operability and working efficiency of the truck and reducing fuel consumption and noise while preventing engine stall of the engine. This control device controls engine rotational frequency NE to a target engine rotational frequency NED by driving a throttle valve by an electric motor, engine output OP is estimated on the basis of throttle opening [theta]TH and engine rotational frequency NE (S18), the target engine rotational frequency NED is raised to a higher value, when the engine output OP is more than threshold values #OP12, #OP23 for first and second raise (S30, S38), and a reduction gear ratio r of CVT is changed to control an output shaft rotational frequency NOUT of CVT to a target output shaft rotational frequency NOUTD input by an operator on the basis of the engine rotational frequency NE (S84, S88).

Description

The control gear of internal-combustion engine

Technical field

The present invention relates to the control gear of internal-combustion engine, more particularly, relate to and be connected to carrier etc. mechanically and with the control gear of its internal combustion engine driven.

Background technique

In the past, technique known was by variable deceleration mechanism the output of internal-combustion engine to be slowed down, to drive continuous machinery.For example, in the technology of patent documentation 1 record, in the carrier of the goods-loading table with lade, by variable deceleration mechanism the output of internal-combustion engine is slowed down, to drive the driving wheel of carrier, more particularly, driving track thus, makes the carrier walking.In addition, specifically, the carrier of patent documentation 1 record is the walk-behind type carrier, on one side the operator carries out the operation of carrier, Yi Bian walking is moved.

In this carrier, general, on one side the operator operates the speed of a motor vehicle regulating lever that is used for indicating the internal-combustion engine rotational speed regulating lever of (input) internal-combustion engine rotational speed and is used for indicating (input) desirable carrier speed, Yi Bian walking is moved.

Specifically, when with respect to act on the crawler belt load (in other words, angles of inclination when walking on upward trend or downhill path etc.), when internal-combustion engine rotational speed (output) was too high or too low, operator rule of thumb operating internal-combustion engines rotating speed regulating lever adjusted internal-combustion engine rotational speed.And, when the operator wants to make carrier to walk with its desirable speed, the operator is input to the control gear of lift-launch on carrier by speed of a motor vehicle regulating lever with target vehicle speed, this control gear is adjusted the reduction speed ratio (ratio) of internal-combustion engine rotational speed and variable deceleration mechanism, so that the speed of carrier becomes target vehicle speed.

In addition, as putting down in writing in the patent documentation 2, technique known is by variable deceleration mechanism the output of internal-combustion engine to be slowed down, the generator that is attached thereto with driving.For the generator of patent documentation 2 record, to export in during certain in the situation of Ac of assigned frequency, the throttle opening of controlling combustion engine is so that internal-combustion engine rotational speed becomes the value of regulation and makes it constant.

In addition, general for this generator, regardless of the load that acts on the generator, that is, the size (change) by the load that is connected to the exterior mechanical generation on the generator all is controlled to be internal-combustion engine rotational speed constant.Therefore, even during the less low load operation of load, internal-combustion engine rotational speed also remains on the value of regulation, so there are unfavorable conditions such as the noise of internal-combustion engine or fuel consumption increase.

Therefore, for example, as the generator of being put down in writing in the patent documentation 3, the someone has proposed the technology that a kind of corresponding load changes (increase and decrease) internal-combustion engine rotational speed.And, be well known that, in the frequency conversion motor, corresponding too load and change internal-combustion engine rotational speed.

Patent documentation 1: Japanese patent laid-open 6-56398 communique

Patent documentation 2: the Japan Patent spy opens the 7-197829 communique

Patent documentation 3: the real fair 3-7555 communique of Japan Patent

Summary of the invention

But in the control gear of the internal-combustion engine of prior art, when when driving carrier etc., the corresponding load of operator and when changing internal-combustion engine rotational speed, the speed of carrier also can change thereupon causes goods to fall or the worry of situation such as breakage so exist.Therefore, when changing internal-combustion engine rotational speed in corresponding load, the operator must operate speed of a motor vehicle regulating lever, and is constant so that the speed of carrier is adjusted to, and operates miscellaneously, also has the problem of working efficiency step-down simultaneously.

And, because relatively the change of the internal-combustion engine rotational speed that carries out of load is based on that operator's experience carries out, become unfavorable condition big, that fuel consumption worsens so produced noise.In addition, when internal-combustion engine low-speed running and carrier were walked at a high speed, under the situation that load sharply increases when upward slope waits, if the operator does not adjust, then internal-combustion engine rotational speed reduced, and may cause internal-combustion engine to stop working.

And, as the generator of record in the above-mentioned patent documentation 2, when changing internal-combustion engine rotational speed when corresponding load, the rotation output that is input to generator promptly changes, so the output voltage and the frequency of generator change, produced the unfavorable condition of the alternating voltage that is difficult to stably to export assigned frequency.In addition, the possessor has proposed following proposal to the greatest extent, that is, AVR (automatic voltage regulating device) is set, on generator regardless of the operating condition of internal-combustion engine, all export stable voltage, but, as previously mentioned, owing to the rotating speed of frequency corresponding to internal-combustion engine changes, so this scheme can not be eliminated above-mentioned unfavorable condition.

And for frequency conversion generator, because the restriction of input voltage, the minimum speed of internal-combustion engine is restricted, so differ fuel consumption that satisfies motor surely and the requirement that reduces noise.

Therefore, the objective of the invention is to address the above problem, a kind of control gear that makes the internal-combustion engine of fuel consumption and noise reduction is provided, wherein, described internal-combustion engine is connected to mechanically and it is driven.

To achieve these goals, the invention provides a kind of control gear of internal-combustion engine, wherein the output of internal-combustion engine is slowed down by variable deceleration mechanism, drive the machinery that is connected on the aforementioned internal-combustion engine with the output after the aforementioned deceleration, described control gear so constitutes, that is, have: actuator, it opens, closes the closure that is arranged on the aforementioned internal-combustion engine; Internal-combustion engine rotational speed feeler mechanism, it detects the rotating speed of aforementioned internal-combustion engine; The internal-combustion engine rotational speed control mechanism, it controls the driving of aforementioned actuator, so that aforementioned detected internal-combustion engine rotational speed becomes the target internal-combustion engine rotational speed; Output shaft rotary speed tester structure, it detects the rotating speed of the output shaft of aforementioned variable deceleration mechanism; Throttle opening feeler mechanism, it detects the aperture of aforementioned closure; Internal-combustion engine output prediction mechanism, its aperture according to aforementioned detected internal-combustion engine rotational speed and closure is inferred the output of aforementioned internal-combustion engine; The target internal-combustion engine rotational speed changes mechanism, rises when using threshold value when the internal-combustion engine output of aforementioned supposition having surpassed, and this mechanism makes aforementioned target internal-combustion engine rotational speed become value on the ascent direction; And reduction speed ratio changes mechanism, and it is based on aforementioned detected internal-combustion engine rotational speed, changes the reduction speed ratio of aforementioned variable deceleration mechanism, so that aforementioned detected output shaft rotating speed becomes the target output shaft rotating speed of regulation.

Description of drawings

Fig. 1 is the profile that has carried according to the carrier of the combustion engine control of first embodiment of the invention.

Fig. 2 is the plan view of carrier shown in Figure 1.

Fig. 3 is the sectional view of explanation internal-combustion engine shown in Figure 1.

Fig. 4 is for schematically representing the explanatory drawing of the structure of CVT shown in Figure 1.

Fig. 5 is for roughly representing the skeleton diagram of the action of ECU shown in Figure 1.

Fig. 6 is the front half part of expression according to the flow chart of the action of first embodiment's combustion engine control.

Fig. 7 is the latter half part of Fig. 6 flow chart.

Fig. 8 is the plotted curve of internal-combustion engine output characteristics of the throttle opening of employed in the processing of presentation graphs 6 flow charts, relative internal-combustion engine.

Fig. 9 is employed in the processing of Fig. 6 flow chart for expression is used in, the figure of the output characteristic curve of the target internal-combustion engine rotational speed of relative internal-combustion engine.

Figure 10 is the plotted curve of characteristic of target deceleration ratio of the CVT of employed in the processing of presentation graphs 6 flow charts, relative internal-combustion engine rotational speed.

Figure 11 is the profile that has carried according to the generator of the combustion engine control of second embodiment of the invention.

Figure 12 is the plan view of generator shown in Figure 11.

Figure 13 is for schematically representing the explanatory drawing of the structure of CVT shown in Figure 11.

Figure 14 is for roughly representing the skeleton diagram of the action of ECU shown in Figure 12.

Figure 15 is the figure of expression according to the action of second embodiment's combustion engine control, and it is the front half part of the flow chart identical with Fig. 6.

Figure 16 is the latter half part of Figure 15 flow chart.

The plotted curve of the characteristic of the target deceleration ratio of the CVT of employed in the processing of Figure 17 for expression Figure 15 flow chart, relative internal-combustion engine rotational speed.

Embodiment

Below, implement the best mode that combustion engine control of the present invention is used with reference to description of drawings.

Fig. 1 is the profile that has carried according to the carrier of the combustion engine control of first embodiment of the invention.Fig. 2 is the plan view of carrier shown in Figure 1.Like this, in first embodiment,, be example with the carrier as being connected to internal-combustion engine and driven machinery.

In Fig. 1 and Fig. 2, symbol 10 expression carriers.Carrier 10 has the goods-loading table 12 of lade (not going out among the figure).Goods-loading table 12 is installed in the place ahead, top of the vehicle frame 14 of carrier 10.Aftermentioned Belt-type Adjustable-speed machine (CVT (Continuously Variable Transmission) is installed at the rear portion of vehicle frame 14; Variable deceleration mechanism.Below, be called " CVT ") 16.Carry internal-combustion engine (below be called " motor ") 18 on the top of CVT16.Motor 18 has recoil starter 20, by spurred recoil starter 20 by the operator, can manually boot motor.

Fig. 3 is the sectional view of explanation motor 18.

Motor 18 has a cylinder 22, and portion can reciprocatingly hold piston 24 within it.Position in the firing chamber 26 of facing motor 18 is provided with intake valve 28 and exhaust valve 30, and they are used for and will open, close between firing chamber 26 and suction tude 32 or the outlet pipe 34.In addition, specifically, motor 18 is gasoline-fueled air cooling four-cycle, single-cylinder OHV type internal-combustion engine, has the air displacement of 163cc.

Piston 24 is connected to bent axle 36, and bent axle 36 links to each other with camshaft 38 by transmission device.End at bent axle 36 is installed flywheel 40, simultaneously, in the forward end of flywheel 40 aforementioned recoil starter 20 is installed.The input shaft of CVT16 is connected to the other end of bent axle 36 by the aftermentioned Traction clutch.

Power coil (alternator) 42 is set in the inboard of flywheel 40, and power coil 42 is followed the rotation of flywheel and is rotated, thereby produces alternating current (a.c.).The alternating current (a.c.) that is produced by power coil 42 is transformed into by not shown processing circuit after the direct current (d.c.), as working power feed point ignition circuit (not shown) etc.

And, in the upstream of suction tude 32 throttle body 46 is set.Accommodate closure 48 in throttle body 46, closure 48 is connected to electric motor 50 (actuator specifically, is a stepper motor) by throttle plate pin and reduction gear (all not shown among the figure).In throttle body 46, Carburetor assembly (not shown) is set at the upstream side of closure 48.The Carburetor assembly is connected to not shown fuel tank, and Fuel Petroleum is ejected into corresponding to the aperture of closure 48 in the inhaled air, forms mixed gas.The mixed gas that generates is inhaled in the firing chamber 26 of cylinder 22 through closure 48, suction tude 32 and intake valve 28.

Engine load sensor (throttle opening feeler mechanism) 52 is set near

electric motor

50, and 52 outputs of this engine load sensor are corresponding to the signal of the aperture θ TH of closure 48 (below, be called " throttle opening ").Near the crankshaft angle sensor that setting is made of the electromagnetism adapter flywheel 40 (internal-combustion engine rotational speed feeler mechanism) 54 is the unit output pulse signal with the crankshaft angles of stipulating.

Return the explanation of Fig. 1 and Fig. 2, as previously mentioned, the bent axle 36 of motor 18 (not shown among Fig. 1,2) is connected to the input shaft (not shown among Fig. 1,2) of CVT16 by Traction clutch (main clutch) 56.The output shaft of CVT16 (not shown among Fig. 1,2, the back is described) is connected to left and right driving wheel 60L, 60R by the live axle 58 that is supported on rotationally on the vehicle frame 14.

Be provided with left and right side clutch 62L, 62R in the centre of live axle 58.Like this, the output of motor 18 is delivered to driving wheel 60L, 60R through Traction clutch 56, CVT16, live axle 58 and side clutch 62L, 62R.

Left and right free pulley 64L, 64R are installed in the place ahead of driving wheel 60L, 60R on vehicle frame 14.Left and right two running wheels 66L, 68L, 66R, the 68R of respectively installing between driving wheel 60L, 60R on the vehicle frame 14 and free pulley 64L, 64R.

As shown in Figure 1, take turns volume extension crawler belt 72R on 66R, the 68R in driving wheel 60R, free pulley 64R and the running on right side.Although not shown, equally also volume is hung crawler belt on driving wheel 60L, the free pulley 64L in left side and turn round wheel 66L, 68L.That is, the output by motor 18 makes driving wheel 60L, 60R rotation, and thus, left and right crawler belt rotates, on one side operator's walking on one side makes carrier 10 walkings (moving).

As depicted in figs. 1 and 2, at the rear portion of vehicle frame 14 fitting operation handle 74.Operating lever 74 extends to the oblique back upper place of carrier 10, simultaneously, forms left and right handle 76L, the 76R that controls for the operator in the top.

Traction clutch bar 78 is set on operating lever 74.Traction clutch bar 78 is connected with aforementioned Traction clutch 56 by not shown cable etc., therefore, by operated walking clutch shaft 78 by the operator, can connect (joint) or disconnection Traction clutch 56.

Left and right swingle 80L, 80R are set on operating lever 74.The swingle 80L in left side is connected with the side clutch 62L in left side by not shown cable etc., by operate the swingle 80L in left side by the operator, and the side clutch 62L on the left of can cutting off.On the other hand, the swingle 80R on right side is connected with the side clutch 62R on right side by not shown cable etc., by operated the swingle 80R on right side by the operator, can cut off the side clutch 62R on right side.

In the time of one among cut-out left and right side clutch 62L, the 62R, on left and right driving wheel 60L, 60R, produce speed discrepancy, thereby carrier 10 turns to.Specifically, the swingle 80L by the operation left side cuts off the side clutch 62L in left side, carrier 10 left-hand rotations.Similarly, the swingle 80R by the operation right side cuts off the side clutch 62R on right side, carrier 10 right-hand rotations.

Speed of a motor vehicle regulating lever 84 is set on operating lever 74.Speed of a motor vehicle regulating lever 84 is operated by the operator, the speed of the desirable carrier of input operation person, that is, and target vehicle speed (middling speed and low speed etc. for example, at a high speed) VD.In addition, in this specification, the so-called 7～10[km/h that is meant at a high speed], middling speed is meant 2～6[km/h] and, low speed is meant 1[km/h] below.

Speed of a motor vehicle regulating lever sensor (target output shaft rotating speed output mechanism) 86 is set near speed of a motor vehicle regulating lever 84.The corresponding signal in position of the speed of a motor vehicle regulating lever 84 that 86 outputs of speed of a motor vehicle regulating lever sensor and operator are operated, in other words, output and the corresponding signal of importing of target vehicle speed VD.

Motor stop switch 88 is set on operating lever 74.When the operator operates motor stop switch 88, the signal that stops to indicate of motor stop switch 88 output expression motors 18.

ECU (electronic control unit) 90 is set near motor 18.ECU90 is made of the microcomputer that comprises CPU, ROM, RAM and counter, and it is transfused to the output from various sensors.

And, walking rod 92 is set near CVT16.Walking rod 92 is connected to the forward-reverse switching mechanism (back description) of CVT16.Walking rod 92 is equivalent to operate the speed change lever of CVT16, by the operation of being undertaken by the operator, CVT16 is in advances, retreat or neutral position (neutral gear).

Below, CVT16 is described.

Fig. 4 is for schematically representing the explanatory drawing of the structure of CVT16.

CVT16 comprises: be connected to the input shaft 94 on the bent axle 36 of motor 18 by Traction clutch 56; Be connected to the output shaft 96 on the live axle 58 of driving wheel 60 by side clutch 62; Be arranged on the V-belt mechanism 98 between input shaft 94 and the output shaft 96; With the forward-reverse switching mechanism 102 that is connected on input shaft 94 and the driving side movable sheave 100.

V-belt mechanism 98 is made of aforementioned driving side movable sheave 100, the slave end movable sheave 104 and the rubber system V-belt 106 that hangs between two pulleys of volume that are arranged on the output shaft 96.Driving side movable sheave 100 is made of with the movable sheave halfbody 110 that relative this fixed pulley halfbody 108 can move axially relatively the fixed pulley halfbody 108 that is arranged on the input shaft 94.

Connect the oil sector (reduction speed ratio changes mechanism) 112 that constitutes by oil pressure pump, oil circuit (not shown) etc. in the side of movable sheave halfbody 110.Like this, when from oil sector 112 when movable sheave halfbody 110 is supplied with oil pressure, promptly produce the pulley side pressure that movable sheave halfbody 110 is moved vertically.

Slave end movable sheave 104 is made of with the movable sheave halfbody 118 that relative this fixed pulley halfbody 116 can move axially relatively the fixed pulley halfbody 116 that is arranged on the output shaft 96.

Connect the oil sector (reduction speed ratio changes mechanism) 120 that constitutes by oil pressure pump, oil circuit (not shown) etc. in the side of movable sheave halfbody 118.Like this, when from oil sector 120 when movable sheave halfbody 118 is supplied with oil pressure, promptly produce the pulley side pressure that movable sheave halfbody 118 is moved vertically.

Because V-belt mechanism 98 is configured as described above, so the suitable pulley side pressure of the slip of V-belt 106 can not take place with setting by the action of control oil sector 112,120, the pulley width of two pulleys 100,104 is changed, thereby the volume that makes V-belt 106 is hung radius and is changed, and can infinitely change reduction speed ratio (velocity ratio) r thus.

Forward-reverse switching mechanism 102 has planetary gears (not shown) etc., the rotation of its input shaft 94 is delivered on the driving side movable sheave 100, and the operation of the walking rod 92 that respective operations person carries out and change the direction of the rotation that passes to driving side movable sheave 100, thereby switch advancing, retreating of carrier 10.When walking rod 92 mediated (neutral position), the transmission of power between motor 18 and the driving side movable sheave 100 was controlled and is cut off, and makes CVT16 become neutral gear thus.

Near the output shaft 96 of CVT16, speed probe (output shaft rotary speed tester structure) 124 is set.Output shaft 96 is whenever goed around, and speed probe 124 is an output pulse signal.

Fig. 5 is for roughly representing the skeleton diagram of the action of ECU90.

As shown in Figure 5, the output of engine load sensor 52, crankshaft angle sensor 54, speed of a motor vehicle regulating lever sensor 86 and speed probe 124 is imported into ECU90.In addition, the output of motor stop switch 88 grades also is imported into ECU90, still, because they and the application's main points do not have direct relation, so omit its diagram.

ECU90 counts the output pulse of crankshaft angle sensor 54, to detect (calculating) engine speed NE.

And, ECU90 is based on detected engine speed NE and throttle TH, so that engine speed NE calculates the electrical instruction value of electric motor 50 with the consistent mode of target engine speed NED (back description), ECU90 outputs to electric motor 50 to control its driving with the electrical instruction value of calculating simultaneously.

Like this, motor 18 by the electronic control type throttle valve device (electronic controller) that constitutes by electric motor 50, ECU90 and various sensors etc. open, close the throttle 48, and rotational speed N E controlled to target engine speed NED.

In addition, ECU90 counts the output pulse of speed probe 124, to detect (calculating) output shaft rotational speed N OUT.

And ECU90 detects the target output shaft rotational speed N OUTD of (output) CVT16 based on the target vehicle speed VD through 86 inputs of speed of a motor vehicle regulating lever sensor.That is, because the vehicle velocity V of carrier and the proportional relation of output shaft rotational speed N OUT of CVT, so can carry out the detection of target output shaft rotational speed N OUTD according to target vehicle speed VD.

ECU90 is based on detected engine speed NE, in other words, input shaft rotating speed NIN based on CVT16, so that output shaft rotational speed N OUT calculates the command value of issuing oil sector 112,120 with the consistent mode of target output shaft rotational speed N OUTD, simultaneously the command value of calculating is outputed to oil sector 112,120 to control its driving.

Like this, CVT16 sets suitable pulley side pressure by oil sector 112,120 and ECU90, and the reduction speed ratio r of control CVT16, makes output shaft rotational speed N OUT consistent with target output shaft rotational speed N OUTD.

Below, with reference to the action of the later figure of Fig. 6 explanation, specifically, the setting processing of the reduction speed ratio r of target engine speed NED and CVT16 be described according to the engine controlling unit of present embodiment.

Fig. 6 is the front half part of the flow chart of its action of expression, and Fig. 7 is its latter half part.Illustrated program cycle (for example 20[millisecond]) with regulation in ECU90 carries out.

Describe below, at first in S10, detection of engine rotational speed N E and with detected engine speed NE storage (preservation) in the RAM of ECU90.Then, advance to S12, judge whether the checkout value of engine speed NE has been stored the cycle of defined amount (for example 10 cycles).When being negative in S12, skip the processing (S14 to S78) of back, on the other hand, when being sure, advance to S14, calculation engine rotating speed mean value NEavg in S12.Engine speed mean value NEavg is the mean value of the engine speed NE in the defined amount cycle (10 cycles) of storage.

Then, advance to S16, detect the currency of throttle TH, advance to S18, infer the output OP of motor 18.Motor output OP is the value (parameter) of expression engine loading, and it is based on engine speed mean value NEavg (roughly saying engine speed NE) and throttle TH supposition.

Below specific description is carried out in the supposition of motor output OP, in this embodiment, as shown in Figure 8, in advance by experiment with the drafting pattern that concerns of the throttle TH under each engine speed and motor output OP, (say exactly based on the engine speed NE that detects (calculating) then, be engine speed mean value NEavg) and throttle TH search in the drawings, infer motor output OP thus.

In addition, when act on crawler belt 72L, the 72R etc. load (promptly, the load of motor 18) increases, reduces and when in engine speed NE and target engine speed NED, producing deviation, ECU90 drives electric motor 50 in order to keep target engine speed NED, regulate throttle TH (promptly, regulate motor output OP), so, infer that motor output OP is equivalent to infer the load that acts on crawler belt 72L, the 72R etc.

Return the explanation of Fig. 6 flow chart, then advance to S20, detect the output shaft rotational speed N OUT of CVT16, and detected output shaft rotational speed N OUT is stored among the RAM of ECU90.

Then, advance to S22, detect the target output shaft rotational speed N OUTD of (determining) CVT16 based on target vehicle speed VD through 86 indications (input) of speed of a motor vehicle regulating lever sensor.

Then, advance to S24, judge whether the target engine speed NED of motor 18 is set to the 1st target engine speed NED1.Target engine speed when the 1st target engine speed NED1 represents when non-loaded when producing the operation of load (do not walk etc.) or extremely low load, in other words, the expression idling speed (for example 2000[rpm]).When the starting of ECU90, target engine speed NED is set to the 1st target engine speed NED1, so judgement at this moment is generally certainly.

When in S24 for certainly the time, advance to S26, judge whether the motor output OP that infers surpasses the 1st and rise and use threshold value #OP12, in other words, judging whether the load that acts on crawler belt 72 grades surpasses extremely hangs down load.In addition, standard-sized sheet when being the 1st target engine speed NED1 with respect to engine speed NE output (output incidence rate 100[%]), the 1st rises is set to 38[% with threshold value #OP12] about output (specifically, be 1.0[PS]).

When in S26 for certainly the time, advance to S28, judge that motor output OP surpasses the 1st rising with the state of threshold value #OP12 the 1st stipulated time t1 that whether passed through (continuity).Described judgement is so carried out, that is, when in S26 for certainly the time, counter (up counter) is started, and confirms whether its count value reaches the 1st stipulated time t1 (for example, 1[second]).

When being sure in S28, advance to S30, shown in solid line among Fig. 9, target engine speed NED is become be set to from the 2nd target engine speed NED2 of the value of the 1st target engine speed NED1 on ascent direction.The 2nd target engine speed NED2 is the target engine speed during than the high low load of aforementioned extremely low load, for example 2500[rpm].When being negative in S26, skip S28, S30, when being negative, skip S30 in S28, keep the 1st target engine speed NED1.

When making target engine speed NED become the 2nd target engine speed NED2 in S30, when next executive routine, being judged as of S24 is negative, advances to S32, judges whether target engine speed NED is set to the 2nd target engine speed NED2.

When in S32 for certainly the time, advance to S34, judge whether motor output OP surpasses that being configured to rises to rise with the 2nd of the big value of threshold value #OP12 than the 1st use threshold value #OP23, in other words, whether judgement acts on load on the crawler belt 72 above aforementioned low load.The output of standard-sized sheet when being the 2nd target engine speed NED2 with respect to engine speed NE, the 2nd rises is set to 57[% with threshold value #OP23] about output (specifically, be 2.0[PS]).

When being sure in S34, advance to S36, identical with the processing of above-mentioned S28, calculate count value when the counter that in S34, is activated for certainly the time, judge motor output OP above the 2nd rising with the state of threshold value #OP23 the 1st stipulated time t1 that whether passed through (continuity).

When being negative in S36, skip S38 described later, keep the 2nd target engine speed NED2.On the other hand, when being sure, advance to S38 in S36, shown in the solid line among Fig. 9, make target engine speed NED become (rising to) and be set to from the 3rd target engine speed NED3 of the value of the 2nd target engine speed NED2 on ascent direction.The 3rd target engine speed NED3 is the target engine speed during than the high middle load of aforementioned low load, for example 3000[rpm].

When being negative in S34, advance to S40, judge whether motor output OP is lower than the 1st decline and uses threshold value #OP21, in other words, judge whether the load that acts on the crawler belt 72 is lower than aforementioned low load.In addition, the 1st decline is set to than the 1st with threshold value #OP21 and rises with the little value of threshold value #OP12.In more detail, the output of standard-sized sheet when being the 2nd target engine speed NED2 with respect to engine speed NE is set to 15[%] output (specifically, be 0.5[PS]).

When in S40 for certainly the time, advance to S42, judge that motor output OP is lower than the 1st decline with the state of threshold value #OP21 the 2nd stipulated time t2 that whether passed through (continuity).In addition, described judgement is so carried out, that is, when in S40 for certainly the time, counter (up counter) is started, and confirms whether its count value reaches the 2nd stipulated time t2 (for example, 1[second]).

When being negative in S42, skip S44 (back description), keep the 2nd target engine speed NED2, on the other hand, when being sure, advance to S44 in S42, shown in dot and dash line among Fig. 9, make target engine speed NED become (dropping to) aforementioned the 1st target engine speed NED1.When being negative in S40, skip above-mentioned S42, S44, keep the 2nd target engine speed NED2.

And, when being negative, advance to S46 in S32, judge whether target engine speed NED is set to the 3rd target engine speed NED3.When in S46 for certainly the time, advance to S58 from the S48 of Fig. 7 flow chart, carry out with from the identical processing of above-mentioned S34 to S44.

Specifically, in S48, judge whether motor output OP uses threshold value #OP34 than the 2nd rising with the 3rd rising of the big value of threshold value #OP23 above being configured to, in other words, judge that whether the load that acts on the crawler belt 72 is above aforementioned middle load.Specifically, the output of standard-sized sheet when being the 3rd target engine speed NED3 with respect to engine speed NE, the 3rd rises is set to 72[% with threshold value #OP34] about output (more particularly, be 3.0[PS]).

When being sure in S48, advance to S50, identical with aforementioned S28, S36, whether the count value of judging the counter that is activated in S48 when being sure reaches the 1st stipulated time t1, that is, judge that motor output OP surpasses the 3rd state with threshold value #OP34 the 1st stipulated time t1 that whether passed through (continuity) that rises.

When being negative in S50, skip S52 (back description), that is, keep the 3rd target engine speed NED3.On the other hand, when being sure, advance to S52 in S50, shown in the solid line among Fig. 9, make target engine speed NED become (rising to) and be set to from the 4th target engine speed NED4 of the value of the 3rd target engine speed NED3 on ascent direction.In addition, the 4th target engine speed NED4 is the target engine speed during than the high high capacity of load in aforementioned, is 3500[rpm in this embodiment].

On the other hand, when being negative, advance to S54 in S48, judge whether motor output OP is lower than the 2nd and descends with threshold value #OP32 (whether the load that acts on the crawler belt 72 is lower than aforementioned middle load).In addition, the 2nd decline is set to than the 2nd with threshold value #OP32 and rises with the little value of threshold value #OP23.In more detail, the output of standard-sized sheet when being the 3rd target engine speed NED3 with respect to engine speed NE is set to 36[%] about output (specifically, be 1.5[PS]).

When in S54 for certainly the time, advance to S56, judge that motor output OP is lower than the 2nd decline with the state of threshold value #OP32 the 2nd stipulated time t2 that whether passed through (continuity).In addition, described judgement is so carried out, and is promptly identical with aforementioned S42, when being sure in S54, counter being started, and confirm whether its count value reaches the 2nd stipulated time t2.

When being sure in S56, advance to S58, shown in dot and dash line among Fig. 9, make target engine speed NED become (dropping to) aforementioned the 2nd target engine speed NED2.When being negative in S54, skip S56, S58, when being negative, skip S58 in S56, keep the 3rd target engine speed NED3.

And, when being negative, advance to S60 in the S46 of Fig. 6 flow chart, judge whether target engine speed NED is set to the 4th target engine speed NED4.When in S60 for certainly the time, advance to S72 from the S62 of Fig. 7 flow chart, carry out and above-mentioned S34 to S44 or the identical processing of S48 to S58.

Specifically, in S62, judge whether motor output OP surpasses the 4th rising threshold value #OP45 that is configured to use than the 3rd rising the big value of threshold value #OP34.Specifically, judge the standard-sized sheet output when being the 4th target engine speed NED4, whether surpass 86[% with respect to engine speed NE] about output (4.0[PS]), in other words, judge whether the load that acts on the crawler belt 72 surpasses aforementioned high capacity.

When in S62 for certainly the time, advance to S64, judge that motor output OP surpasses the 4th rising with the state of threshold value #OP45 the 1st stipulated time t1 that whether passed through (continuity).In addition, identical with aforementioned S28, S36, S50, described judgement is so carried out, and, confirms whether reach the 1st stipulated time t1 when the count value of the counter that is activated when sure in S62 that is.

When being negative, skip S66 (back description) in S64.As a result, keep the 4th target engine speed NED4.On the other hand, when being sure, advance to S66 in S64, shown in the solid line among Fig. 9, make target engine speed NED become (rising to) and be set to from the 5th target engine speed NED5 of the value of the 4th target engine speed NED4 on ascent direction.In addition, the 5th target engine speed NED5 is the target engine speed during than the high high load of aforementioned high capacity, and in this embodiment, revolution takes place in maximum output is 4000[rpm].

On the other hand, when being negative, advance to S68 in S62, judge whether motor output OP is lower than the 3rd decline and uses threshold value #OP43, in other words, judge whether the load that acts on the crawler belt 72 is lower than aforementioned high capacity.In addition, the 3rd descends is set to than the 3rd rising little value of threshold value #OP34 with threshold value #OP43, specifically, and the standard-sized sheet output when being the 4th target engine speed NED4 with respect to engine speed NE, be set to 53[%] about output (more particularly, be 2.5[PS]).

When in S68 for certainly the time, advance to S70, identical with aforementioned S42, S56, quantifier numerical value judges that motor output OP is lower than the 3rd decline with the state of threshold value #OP43 the 2nd stipulated time t2 that whether passed through (continuity).

When being negative, skip S72 described later (keeping the 4th target engine speed NED4) in S70.On the other hand, when being sure, advance to S72 in S70, shown in dot and dash line among Fig. 9, make target engine speed NED become (dropping to) aforementioned the 3rd target engine speed NED3.When being negative in S68, skip above-mentioned S70, S72, keep the 4th target engine speed NED4.

And, when being negative in S60 (, when target engine speed NED is set to the 5th target engine speed NED5), advance to the S74 of Fig. 7 flow chart, judge whether motor output OP is lower than the 4th decline threshold value #OP54, in other words, judge whether the load that acts on the crawler belt 72 is lower than aforementioned high load.The 4th descends is set to than the 4th rising little value of threshold value #OP45 with threshold value #OP54, in more detail, the output of standard-sized sheet when being the 4th target engine speed NED4 with respect to engine speed NE is set to 75[%] about output (specifically, be 3.5[PS]).

When in S74 for certainly the time, advance to S76, judge that motor output OP is lower than the 4th decline with the state of threshold value #OP54 the 2nd stipulated time t2 that whether passed through (continuity).In addition, this judges also identical with aforementioned S42, S56, S70.

When being sure in S76, advance to S78, shown in dot and dash line among Fig. 9, make target engine speed NED become (dropping to) aforementioned the 4th target engine speed NED4.When being negative in S74, the processing of skipping S76, S78, when being negative in S76, the processing of skipping S78 keeps the 5th target engine speed NED5.

As mentioned above, when target engine speed NED corresponding to acting on load on crawler belt 72 grades when changing, engine speed NE promptly changes thereupon, therefore, the vehicle velocity V of carrier also can change.But, in control gear,, the vehicle velocity V of carrier can be controlled to the constant speed of a motor vehicle by carrying out following processing according to first embodiment's motor.

Specifically, in S80, detected output shaft rotational speed N OUT and target output shaft rotational speed N OUTD are compared.That is, the output shaft rotational speed N OUT of the current vehicle speed V of expression carrier and the target output shaft rotational speed N OUTD of expression operator desirable target vehicle speed VD are compared.

When in S80, being judged as output shaft rotational speed N OUT when bigger than target output shaft rotational speed N OUTD, in other words, when in for example S30, S38, S52 and S66, making target engine speed NED become value on the ascent direction, engine speed NE rises, and when output shaft rotational speed N OUT rises thereupon, advance to S82, the target deceleration that calculates CVT16 compares rD.

Calculating than rD is specifically described to target deceleration below.As shown in figure 10, in advance by experiment with the engine speed NE under each target vehicle speed VD and target deceleration the drafting pattern that concerns than rD, (say exactly based on detected engine speed NE in S82 then, be engine speed mean value NEavg) and target vehicle speed VD search in the drawings, calculate target deceleration thus and compare rD.In addition, in Figure 10, as target vehicle speed VD, illustration high speed, middling speed, three kinds of speed of low speed.

Return the explanation of Fig. 6 flow chart, then, advance to S84, the action of control (change) oil sector 112,120 is so that the target deceleration that the reduction speed ratio r of CVT16 is become calculate compares rD.Therefore, even change under the situation of (rising) in the corresponding load of engine speed NE, the reduction speed ratio r of CVT16 also can so be changed, specifically, be reduced, so output shaft rotational speed N OUT can be remained target output shaft rotational speed N OUTD, that is, vehicle velocity V can be remained target vehicle speed VD.

On the other hand, when in S80, being judged as output shaft rotational speed N OUT than target output shaft rotational speed N OUTD hour, in other words, when in for example S44, S58, S72 and S78, making target engine speed NED become value on the descent direction, engine speed NE descends, and output shaft rotational speed N OUT advances to S86 when descending thereupon, identical with above-mentioned S82, the target deceleration that calculates CVT16 compares rD.

Then, advance to S88, the action of control (change) oil sector 112,120 is so that the target deceleration that the reduction speed ratio r of CVT16 is become calculate in S86 compares rD.Therefore, even change in the situation of (decline) in the corresponding load of engine speed NE, the reduction speed ratio r of CVT16 also can so be changed, specifically, be increased, so output shaft rotational speed N OUT can be remained target output shaft rotational speed N OUTD, that is, vehicle velocity V can be remained target vehicle speed VD.

In addition, when in S80, being judged as output shaft rotational speed N OUT and target output shaft rotational speed N OUTD when equating, in other words, when target engine speed NED does not change in above-mentioned S30 or S44 etc., there is no need to change the reduction speed ratio r of CVT16, therefore keep current reduction speed ratio r and termination routine.

Like this, in engine controlling unit according to first embodiment of the invention, owing to so construct, promptly, when surpassing to rise, the motor output OP based on engine speed NE and throttle TH supposition uses threshold value, specifically, surpass the 1st to the 4th rising threshold value #OP12, #OP23, #OP34, during #OP45, make target engine speed NED become on the ascent direction value (specifically, the the 2nd to the 5th target engine speed NED2, NED3, NED4, NED5), on the contrary, rise when using threshold value, do not make target engine speed NED become value (maintenance is set at the target engine speed NED of low value) on the ascent direction when motor output OP is lower than, so, when motor output OP hour, engine speed NE can be set at low value, fuel consumption or noise are reduced.

And, owing to needn't adjust engine speed NE with engine speed regulating lever etc., thus can make simple to operateization, thus operability and working efficiency can be improved.

In addition, owing to changing engine speed NE corresponding to motor output (load) OP, so, make motor 18 low-speed runnings and making under the state that carrier walks at a high speed, even under the situation that load sharply increases when upward slope waits, also increase accordingly, so can prevent the engine misses of carrier 10 owing to engine speed NE load.

And, owing to, that is, change the reduction speed ratio r of CVT16 corresponding to the variation of engine speed NE, so that output shaft rotational speed N OUT becomes target output shaft rotational speed N OUTD, so the operator only imports desirable speed (target vehicle speed VD based on engine speed NE.Target output shaft rotational speed N OUTD), carrier 10 is walked with described velocity-stabilization ground.Promptly, even under the situation that has taken place to change at engine speed NE, for example load OP has taken place to change and engine speed NE has been taken place under the situation of variation when upward slope or descending, also can carrier 10 be walked with constant speed (target vehicle speed VD) by the reduction speed ratio r that changes CVT16.Therefore, simple to operateization of carrier 10 can be made, thereby operability and working efficiency can be further improved.

The ratio that is lower than setting as the motor output OP that infers rises with the low decline threshold value of threshold value, specifically, being lower than the 1st to the 4th descends when using threshold value #OP21, #OP32, #OP43, #OP54, make target engine speed NED become on the descent direction value (specifically, the the 1st to the 4th target engine speed NED1, NED2, NED3, NED4), so, export (load) when OP has reduced at motor, target engine speed NED is descended, thereby can more effectively reduce noise and improve specific fuel consumption.

In addition, be set at than rising with threshold value owing to will descend with the little value of threshold value, for example, rising with threshold value #OP12 for the 1st is 1.0[PS] situation, the 1st descends is set to 0.5[PS with threshold value #OP21], so can prevent switching target engine speed NED (tourist bus (hunting) takes place) continually.

And, owing to so construct, promptly, when the motor output OP that infers surpasses the state that rises with threshold value and has passed through the 1st stipulated time t1, make target engine speed NED become value on the ascent direction, on the other hand, when the motor output OP that infers is lower than the state that descends with threshold value and has passed through the 2nd stipulated time t2, make target engine speed NED become value on the descent direction, so can prevent the variation of the target engine speed NED that causes by temporary transient load change, thereby can more effectively reduce fuel consumption and noise.

And, owing to so construct, promptly, have a plurality of risings respectively and use threshold value with descending with threshold value, and change to rise with threshold value and descend corresponding to the target engine speed NED that has changed and use threshold value, so, target engine speed NED can be set at and the corresponding more suitable value of the load that produces (motor output OP), thereby can more effectively reduce fuel consumption and noise.

And, owing to so construct, that is, rotating speed takes place in the maximum output of exporting with the maximum of expression motor 18 generations, specifically, with 4000[rpm] be the upper limit, make target engine speed NED become value on the ascent direction, so, when the load that produces (motor output OP) is maximum, can make motor output maximization, thereby can further increase work efficiency.

Below, the engine controlling unit according to second embodiment of the invention is described.

Figure 11 is the profile that has carried according to the generator of the engine controlling unit of second embodiment of the invention, and Figure 12 is the plan view of generator shown in Figure 11.In a second embodiment, driven machinery as being connected to motor 18 replaces carrier 10 and is example with the generator.

In Figure 11 and Figure 12, the described generator of symbol 200 expressions.Generator 200 has the alternator (generator) 202 by CVT16 connects and output by the motor 18 after being slowed down by CVT16 drives.In a second embodiment, motor 18 carries obliquely on generator 200.Throttle body cover 204 (can't see among Figure 11) is set above motor 18, and portion is provided with throttle body (not shown) and ECU90 etc. within it.In addition, the structure of motor 18 and first embodiment's is identical.

The rotation of motor 18 (output) passes to alternator 202 by CVT16 and sends alternating current (a.c.) so that it is driven.In addition, alternator 202 has aforementioned AVR (automatic voltage regulating device), and it is the known alternator that is made of rotor and stator (not shown), its detailed description of Therefore, omited.

The alternating current (a.c.) that alternator 202 sends is transformed into after the direct current (d.c.) by not shown processing circuit, supply with ECU90 and not shown firing circuit etc. as working power, simultaneously, be shaped to the stable sine wave of 50Hz or 60Hz by the frequency variator (not shown), afterwards, supply with exterior mechanical by the socket (not shown).

At the appropriate location of alternator 202 fitting operation panel 206 (as shown in figure 12).Although not shown, on operation panel 206, be provided with for the operator start the running usefulness of cutting off generator 200 main switch, represent generator 200 whether normal power generation signaling lamp and obtain aforesaid sockets that the output voltage of generator 200 uses etc.Symbol 208 expression fuel tanks, symbol 210 expressions are connected to the silencing apparatus on the outlet pipe of motor 18.

Figure 13 is for schematically representing the explanatory drawing of the structure of CVT16 among second embodiment, and Figure 14 is for roughly representing the skeleton diagram of the action of ECU90 among second embodiment.

Below the place different with first embodiment stressed, in a second embodiment, described machinery is generator 200, but not the mechanism of walking, so, from CVT16, remove employed Traction clutch 56, side clutch 62 and forward-reverse switching mechanism 102 among first embodiment.Except that above-mentioned point, the formation of CVT16 and first embodiment's has no difference among second embodiment.

And, for the same reason, the speed of a motor vehicle regulating lever sensor 86 of speed of a motor vehicle regulating lever 84 and its position of detection etc. is not set, so as shown in figure 14, from the input of ECU90, removed target vehicle speed VD.Remove this point, the action of ECU90 has nothing different with first embodiment's.That is, ECU90 is so that the detected engine speed NE mode consistent with target engine speed NED calculated the electrical instruction value of electric motor 50, and the electrical instruction value of calculating is outputed to electric motor 50, to control its driving.

In addition, ECU90 is based on engine speed NE, in other words, input shaft rotating speed NIN based on CVT16, output pulse to speed probe 124 is counted, and so that the detected output shaft rotational speed N OUT mode consistent with target output shaft rotational speed N OUTD calculated the command value of issuing oil sector 112,120, the reduction speed ratio r of control (change) CVT16.In addition, in a second embodiment, target output shaft rotational speed N OUTD is set to fixed value, specifically, is 3600[rpm] (frequency of output current is 60[Hz] time).

In addition, although omit diagram, ECU90 makes aforementioned signaling lamp luminous, and when the indication of being closed (cut-out) generator 200 by operator's input by main switch etc., ECU90 carries out ignition suspension etc. with described indication.

Similar with Fig. 6 and Fig. 7, Figure 15 and 16 is illustrated as according to the front half part of the flow chart of the operation of second embodiment's engine controlling unit and latter half part.Illustrated program cycle (for example 20[millisecond]) with regulation in ECU90 carries out.

Below the place different with first embodiment stressed, identical with first embodiment's S10 to S16, carry out the processing of S100 to S106, advance to S108 afterwards, infer the output OP of motor 18.Specifically, identical with first embodiment, the patterned by experiment in advance data-speculative motor output of reference OP.

In addition, when act on the alternator 202 load (promptly, the load of motor 18) increases, reduces, thereby when in engine speed NE and target engine speed NED, producing deviation, ECU90 drives electric motor 50 in order to keep target engine speed NED, regulates throttle TH (that is, regulating motor output OP), so, infer that motor output OP is equivalent to infer the load that acts on the alternator 202.

Then,, carry out the processing identical, afterwards, advance to S168, detected output shaft rotational speed N OUT and target output shaft rotational speed N OUTD (fixed value) are compared with first embodiment's S18 to S78 from S110 to S166.In addition, because target output shaft rotational speed N OUTD is a fixed value in a second embodiment, so remove the step of the S20 that is equivalent to Fig. 6 flow chart.

When in S168, being judged as output shaft rotational speed N OUT when bigger than target output shaft rotational speed N OUTD, in other words, for example when in S118 etc., target engine speed NED becomes the value on the ascent direction, engine speed NE rises, when output shaft rotational speed N OUT rises thereupon, advance to S170, the target deceleration that calculates CVT16 compares rD.

Target deceleration is also more identical with first embodiment than the calculating of rD, but, in a second embodiment, there is not the target setting speed of a motor vehicle, so, as shown in figure 17, only a kind of relatively situation becomes output shaft rotational speed N OUT the engine speed NE and the relational graphization of target deceleration than rD of target output shaft rotational speed N OUTD in advance by experiment.In processing such as S170, search in the drawings based on detected engine speed NE (saying exactly, is engine speed mean value NEavg), calculate target deceleration and compare rD.

Then, advance to S172, the action of control (change) oil sector 112,120 is so that the target deceleration that the reduction speed ratio r of CVT16 is become calculate compares rD.In a second embodiment, even the corresponding load of engine speed NE and change (risings), also the reduction speed ratio r owing to CVT16 is changed, and specifically, is reduced, so output shaft rotational speed N OUT can be remained to the target output shaft rotational speed N OUTD of regulation.

On the other hand, when in S168, being judged as output shaft rotational speed N OUT than target output shaft rotational speed N OUTD hour, in other words, for example when in S132 etc., target engine speed NED becomes the value on the descent direction, engine speed NE descends, when output shaft rotational speed N OUT descends, advance to S174 thereupon, target deceleration is increased than rD, advance to S176, the action of control oil sector 112,120.Therefore, even change under the situation of (decline) in the corresponding load of engine speed NE, also the reduction speed ratio r owing to CVT16 changes to increasing direction, so output shaft rotational speed N OUT can be remained to target output shaft rotational speed N OUTD.

In addition,, there is no need to change the reduction speed ratio r of CVT16, therefore keep present reduction speed ratio r and termination routine when in S168, being judged as output shaft rotational speed N OUT and target output shaft rotational speed N OUTD when equating.

Like this, in engine controlling unit according to second embodiment, owing to so construct, promptly, when surpassing to rise, the motor output OP based on engine speed NE and throttle TH supposition uses threshold value, specifically, surpass the 1st to the 4th rising threshold value #OP12, #OP23, #OP34, during #OP45, make target engine speed NED become on the ascent direction value (specifically, be the 2nd to the 5th target engine speed NED2, NED3, NED4, NED5), on the contrary, rise when using threshold value, do not make target engine speed NED become value (maintenance is set at the target engine speed NED of low value) on the ascent direction when motor output OP is lower than, so, when motor output OP hour, compare with frequency conversion motor etc., engine speed NE can be set at low value.Like this, the use field of motor 18 be can enlarge, fuel consumption and noise further reduced.

And, owing to so construct, promptly, based on engine speed NE, in other words, change the reduction speed ratio r of CVT16 corresponding to the variation of engine speed NE, so that output shaft rotational speed N OUT becomes target output shaft rotational speed N OUTD, so, even under the situation that has taken place to change at engine speed NE, for example change and cause under the situation that engine speed NE taken place to change acting on load on the alternator 202, also can be by changing the reduction speed ratio r of CVT16, make output (output shaft rotational speed N OUT) constant, thereby can stably export the alternating voltage of assigned frequency through CVT16 input AC generator 202.

And, owing to so construct, promptly, when the motor output OP that infers surpasses the state that rises with threshold value and has passed through the 1st stipulated time t1, make target engine speed NED become value on the ascent direction, on the other hand, when the motor output OP that infers is lower than the state that descends with threshold value and has passed through the 2nd stipulated time t2, make target engine speed NED become the value of descent direction, so can prevent the variation of the target engine speed NED that causes by the temporary transient change of motor output (fuel that results from accumulate etc. accidental fluctuation), thereby can more effectively reduce fuel consumption and noise.

And, owing to so construct, that is, rotating speed takes place in the maximum output of exporting with the maximum of expression motor 18 generations, specifically, with 4000[rpm] be the upper limit, make target engine speed NED become value on the ascent direction, so, when the load that produces (motor output OP) is maximum, motor output maximization can be made, thereby the use field maximization of motor 18 can be made.

As mentioned above, the control gear of the internal-combustion engine among first, second embodiment is slowed down to the output of internal-combustion engine (motor) 18 by variable deceleration mechanism (CVT16), drive the machinery (carrier 10, generator 200) that is connected on the aforementioned internal-combustion engine with the output after the aforementioned deceleration, described control gear so constitutes, promptly, have: actuator (electric motor 50), it opens, closes the closure 48 that is arranged on the aforementioned internal-combustion engine; Internal-combustion engine rotational speed feeler mechanism (crankshaft angle sensor 54, ECU90, S10 to S14, S100 to S104), it detects the rotational speed N E of aforementioned internal-combustion engine; Internal-combustion engine rotational speed control mechanism (ECU90), it controls the driving of aforementioned actuator, so that aforementioned detected internal-combustion engine rotational speed NE becomes target internal-combustion engine rotational speed NED; Output shaft rotary speed tester structure (speed probe 124, ECU90, S20, S110), it detects the rotational speed N OUT of the output shaft 96 of aforementioned variable deceleration mechanism; Throttle opening feeler mechanism (engine load sensor 52, ECU90, S16, S106), it detects the aperture θ TH of aforementioned closure; Internal-combustion engine output prediction mechanism (engine load sensor 52, ECU90, S18, S108), its aperture according to aforementioned detected internal-combustion engine rotational speed and closure is inferred the output OP of aforementioned internal-combustion engine; The target internal-combustion engine rotational speed changes the (ECU90 of mechanism, S24 to S38, S46 to S52, S60 to S66, S112 to S126, S134 to S140, S148 to S154), when the internal-combustion engine of aforementioned supposition output OP has surpassed when rising with threshold value #OP12, #OP23, #OP34, #OP45, this mechanism makes aforementioned target internal-combustion engine rotational speed NED become value NED2, NED3, NED4, NED5 on the ascent direction; And reduction speed ratio changes the (ECU90 of mechanism, S80 to S88, S168 to S176), it is based on aforementioned detected internal-combustion engine rotational speed NE, change the reduction speed ratio r of aforementioned variable deceleration mechanism, so that aforementioned detected output shaft rotational speed N OUT becomes the target output shaft rotational speed N OUTD of regulation.

And aforementioned target internal-combustion engine rotational speed changes mechanism so constructs, promptly, the aforementioned rising of ratio that is lower than setting as the motor of aforementioned supposition output OP is with the low decline of threshold value during with threshold value #OP21, #OP32, #OP43, #OP54, make aforementioned target engine speed NED become value NED1, NED2, NED3, NED4 (ECU90, S40 to S44, S54 to S58 on the descent direction, S68 to S72, S74 to S78, S128 to S132, S142 to S146, S156 to S160, S162 to S166).

And, aforementioned target internal-combustion engine rotational speed changes mechanism and so constructs, promptly, when the internal-combustion engine of aforementioned supposition output OP surpasses the state that rises with threshold value and passed through the 1st stipulated time t1, make aforementioned target internal-combustion engine rotational speed become value on the ascent direction, on the other hand, when the internal-combustion engine of aforementioned supposition output OP is lower than the state that descends with threshold value and has passed through the 2nd stipulated time t2, make aforementioned target internal-combustion engine rotational speed become value (ECU90, S24 to S78, S112 to S166) on the descent direction.

And aforementioned machinery is carrier, and this carrier has at least: the goods-loading table 12 of lade; With operation according to the operator, the driving wheel 60L that drives by the output after the deceleration of aforementioned internal-combustion engine, 60R, and described carrier has corresponding aforementioned operation person's operation, export the target output shaft rotating speed output mechanism (speed of a motor vehicle regulating lever 86 of aforementioned target output shaft rotational speed N OUTD, ECU90, S22), aforementioned reduction speed ratio changes mechanism and so constitutes, promptly, change the reduction speed ratio r of aforementioned variable deceleration mechanism based on aforementioned detected internal-combustion engine rotational speed NE, so that make aforementioned detected output shaft rotating speed become aforementioned target output shaft rotating speed (ECU90, S80 to S88).

And aforementioned machinery so constitutes, that is, and and its generator 200 for driving by the output after the deceleration of aforementioned internal-combustion engine.

In addition, in first embodiment and second embodiment, although the 1st stipulated time t1 and the 2nd stipulated time t2 are set at 1[second],, it is also passable that both are set at different values.And, although target engine speed NED is configured to 5 grades, also can below 4 grades or more than 6 grades.

And, although show target engine speed NED and stipulated time t1, t2 particularly, and the numerical value of motor output OP etc., also can be not limited to these values.

And, although as variable-speed motor, used CVT (stepless speed changer) 16,, replace it, also can use the step change machine.

In addition,, used stepper motor, also can use DC motor or rotating electromagnetic valve (rotary solenoid) to wait other actuator although conduct is opened, the actuator of close the throttle 48.

And in first embodiment, carrier 10 is walked by crawler belt 72 is rotated, but it is not limited thereto, and also can remove crawler belt 72, and tire (wheel) is connected on the live axle 58, walks by described tire (wheel) is rotated.

And, in a second embodiment, although target output shaft rotational speed N OUTD is 3600[rpm], 3000[rpm] (frequency of output current is 50[Hz]) also passable, perhaps other suitable value is also passable.

Claims

1. the control gear of an internal-combustion engine is wherein slowed down to the output of internal-combustion engine by variable deceleration mechanism, drives the machinery that is connected on the aforementioned internal-combustion engine with the output after the aforementioned deceleration, it is characterized in that, described control gear has:

A. actuator, it opens, closes the closure that is arranged on the aforementioned internal-combustion engine;

B. internal-combustion engine rotational speed feeler mechanism, it detects the rotating speed of aforementioned internal-combustion engine;

C. internal-combustion engine rotational speed control mechanism, it controls the driving of aforementioned actuator, so that aforementioned detected internal-combustion engine rotational speed becomes the target internal-combustion engine rotational speed;

D. output shaft rotary speed tester structure, it detects the rotating speed of the output shaft of aforementioned variable deceleration mechanism;

E. throttle opening feeler mechanism, it detects the aperture of aforementioned closure;

F. internal-combustion engine is exported prediction mechanism, and it infers the output of aforementioned internal-combustion engine according to the aperture of aforementioned detected internal-combustion engine rotational speed and closure;

G. the target internal-combustion engine rotational speed changes mechanism, rises when using threshold value when the internal-combustion engine output of aforementioned supposition having surpassed, and this mechanism makes aforementioned target internal-combustion engine rotational speed become value on the ascent direction; With

H. reduction speed ratio changes mechanism, and it is based on aforementioned detected internal-combustion engine rotational speed, changes the reduction speed ratio of aforementioned variable deceleration mechanism, so that aforementioned detected output shaft rotating speed becomes the target output shaft rotating speed of regulation.

2. the control gear of internal-combustion engine as claimed in claim 1, it is characterized in that: when the aforementioned rising of ratio that is lower than setting when the output of the internal-combustion engine of aforementioned supposition use threshold value with the low decline of threshold value, aforementioned target internal-combustion engine rotational speed change mechanism made aforementioned target internal-combustion engine rotational speed become value on the descent direction.

3. the control gear of internal-combustion engine as claimed in claim 2, it is characterized in that: when the output of the internal-combustion engine of aforementioned supposition surpassed aforementioned rising and passed through for the 1st stipulated time with the state of threshold value, aforementioned target internal-combustion engine rotational speed change mechanism made aforementioned target internal-combustion engine rotational speed become value on the ascent direction; On the other hand, when the output of the internal-combustion engine of aforementioned supposition is lower than aforementioned decline and passed through for the 2nd stipulated time with the state of threshold value, make aforementioned target internal-combustion engine rotational speed become value on the descent direction.

4. as the control gear of each described internal-combustion engine in the claim 1 to 3, it is characterized in that: aforementioned machinery is carrier, it has the goods-loading table of lade and at least according to operator's operation, the driving wheel that is driven by the output after the deceleration of aforementioned internal-combustion engine

Described control gear also has: i. target output shaft rotating speed output mechanism, aforementioned target output shaft rotating speed is exported in the corresponding aforementioned operation person's of this target output shaft rotating speed output mechanism operation.

5. as the control gear of each described internal-combustion engine in the claim 1 to 3, it is characterized in that: the generator of aforementioned machinery for driving by the output after the deceleration of aforementioned internal-combustion engine.