TW590918B - Engine start control apparatus - Google Patents

Abstract

Engine startability is to be improved in a reverse rotation control in which a crank shaft is rotated reverse up to a predetermined position just after the stop of an engine so as to be ready for the next engine start. An engine start control apparatus including reverse rotation control means which starts the supply of electric power for reverse rotation to a starter motor just after the stop of an engine, crank angle detecting means for detecting that a crank shaft, when rotating reverse, has reached an angle corresponding to a top dead center of a piston, and reversing load detecting means for detecting a reversing load on the crank shaft, the reverse rotation control means terminating the supply of electric power for reverse rotation in response to the arrival of the crank shaft at the angle corresponding to the top dead center detected by the crank angle detecting means [""X"" mark on curved line A in Fig. 6(c)] or in response to a rise of the reversing load detected by the reversing load detecting means [""X"" mark on curved line B in Fig. 6(c)], whichever is the earlier.

Description

590918 V. Description of the invention (1) (Technical field to which the present invention belongs) The present invention relates to a control device that works together. The starter motor is not out of air 2 丨 The opposite of the text is about the engine. Ί Qingzhi

Control device. Position, and improve the startability of the C (known technology). The start of M is disclosed in, for example, Japanese Patent Publication No. 7-71 350 0, No. 6445 No. 1 or Japanese Patent Publication No. Hei. At the predetermined position when starting the engine, the crankshaft can be reversely rotated to the dynamic position by turning the cranking position to improve the engine start (problem to be solved by the present invention). In the middle, because the crank shaft will be reversed with a large starting torque (two k, torque), therefore: when the moment of the crankshaft passes through the waste wall on the forward rotation day t, it will return to the time when the horse f is reversed and energized. Then the crankshaft will advance in the forward rotation direction by the pressure of the piston = start). -The primary reaction force is here, as described in the above-mentioned conventional technology, for the engine to start ^ :: ^ turn 'immediately afterwards. The forward rotation control method, because the upper acting force and the turning driving force generated by the starter motor are transmitted to the song # 'shaft' at the same time. Therefore, even if the crank shaft advances forward 2 due to the above compression reaction force, Will damage the startability. Τ square When the engine starts, just after the engine stops, # crank shaft reverses to the predetermined position to prepare for the next engine start system ^ m page 6 \\ 312 \ 2d-code \ 91-01 \ 90126153.ptd --- --- V. Description of the invention (2) As far as the crankshaft is moving in the forward direction * due to # ~~ --- = method idpdi: J force. For the purpose of the present invention, the engine has just stopped. i After solving the above-mentioned problem T h, let the crankshaft ,,,, and ^ 迖 know the technology, and prepare for mobility at the position set by the second: second engine start c. Turn control, can be fully Improve the lead; [means to solve the problem] To reach the above Π: reverse its crank car] to :! The Ming is mainly aimed at-when the engine is stopped, the engine 2 which is started by the engine to position 5 contains: a dynamic control device, characterized in that the crankshaft of the human soil is turned forward to start the engine after the engine stops. Motor; control mechanism; 彳 start to implement reverse rotation of the starter motor to detect the crank angle row when the message is reversing = the axis reaches the dead point above the piston, the corresponding angle is used to detect the above crank = mechanism and; the above reverse control The mechanism, the load reversal load detection mechanism, detects the angle of the crank shaft when the crank shaft reaches the upper dead handle, and responds to the reversal of energization. According to the above-mentioned rebate, i, the special load of the upper one of the juice is finished. Before the reverse load of the crankshaft rises, when the reciprocal \\ 3l2 \ 2d-C〇de] 9l ^ \ 90126l53.ptd Page 7 V. Description of the Invention ^ _______ The shaft reached the top dead center near the storage point. Therefore, if it is used, the position is predicted to be exhausted to the top. When the inertia force is further reversed and the reversal current is stopped at the ΌHai position, the crank shaft can be turned up (at the time of reverse rotation). It can be brought back to the top dead center of compression. On the other hand, before the reverse load of the crank shaft rises $ * before reaching the angle corresponding to the top dead angle, when the front of the crank (reversed ') is because the position is already under compression The car at the top dead center can stop the crank when the reverse top power point j is stopped. ", 6, and 4 faces (when reversing) and a small compression reaction force (an embodiment of the invention)

Hereinafter, the present invention will be described with reference to the engine start ir for a vehicle of the drawing Z. Fig. 1 is a diagram to which the present invention is applied. The entire side of the front body of the speed locomotive of the locomotive made by locomotive is connected with the car, and the car is engraved. It is connected through the low bottom part (fi00r) 7 Made up. The body frame of the frame of the frame of the body material is about 6 and the main support f / gan ', ^ 4 phase, and a storage box (none of which is shown). The main body 7 is arranged above the seat 8 . At the front of the vehicle body, P, | A u 11 'and the front fork 12 is facing downwards * The upper base is provided with a handle 1 1 which is pivotally connected to the steering head 5 and the front wheel " shaft is connected at its lower end . The lower end of the handle is covered by the handle cover 13 of the instrument panel. On the main pipe 7 18, the suspension bracket 5 of the unit 2 is shaken via the connection ^: m1 :. The piece 16 is connected to the supporting unit 2 in a freely swingable manner, and a single-cylinder & stroke engine 590918 is mounted on the front portion.

The cam plate 21 5 is a slanted push-out surface on the right side, and the "pushing / moving side pulley half body beautiful roll bb gli, ^ between the pushing surface and the movable pulley half body 2 1 0 R There is a dry weight ban 2i6 in each of the spaces. When the rotation speed of the η shaft 021 increases, the above-mentioned dry weight that will rotate together between the movable side pulley half = ip t cam plate 215 The ball 216, the heart moves towards the centrifugal direction, the movable side pulley half body 2 1 OR will be pushed by the heavy ball 2 1 6 to move to the left and close to the fixed side pulley limb ljL. As a result, The skin between the two mL halves of mL and 2i0r ▼ 2 1 2 will move towards the centrifugal direction, which will make its diameter larger. F The rear part of the vehicle is equipped with the belt-driven pulley 2 丨〇The corresponding passive pulley t is not shown), and the V-belt 212 is wound on the passive pulley. With the belt transmission mechanism, the power of the engine E can be adjusted automatically, and the power is transmitted to the centrifugal clutch, and the above-mentioned deceleration is performed. Mechanism 9 etc. to drive the rear wheel RW ° In the right crankcase 2 0 2 R, it is equipped with a starter motor and an AC generator set The starter and generator 1 are formed. The starter and generator 1 are fixed to the front-end push-out portion of the crank shaft 2 〇1 by screws 2 5 3 ′, and are arranged on the outer rotor 6 〇 The inner stator 50 on the inner side is supported by the crank case 202 by bolts 2 7 9.

The fan 2 8 0 is fixed to the outer rotor 60 by the bolt 2 4 6 at the lower end portion of the central conical portion 2 8 0 a, and the fan 280 is covered by the fan cover 2 8 1 through the radiator 282. On the crank shaft 201, a sprocket 231 is fixed between the starter-cum-motor 1 and the bearing 209. Starting from the crank shaft 2 0 1 will be used to drive the cam

\\ 312 \ 2d-code \ 91-01 \ 90126153.ptd Page 10 V. Description of the invention (6) The chain of the axle (not shown) is wound on the sprocket 231. In addition, the above chain

The f-wheel 231 is integrally formed with a gear 232 for transmitting power to a pump that circulates the lubricant. J N Figure 3 is a block diagram of the control system for the starter and generator mentioned above, and the same component numbers above indicate the same or equivalent parts. , 4 fECU—Equipped with a three-phase full-wave rectifying bridge circuit 4⑽, and a bridge circuit 4 for the trinocular parent Behr full-wave rectification of the starter and generator 1 function. . The output is limited to a predetermined adjustment electric dust (for example, 14.5 "adjuster 10.), and when the engine is stopped •, 仏 ^ Γ. 1 is reversed to the predetermined position (SWing baCk) control section, at E ^ U is connected with a rotor angle sensor 29, an ignition coil M, an oil sensor 23, a fuel sensor 24, a seat switch 25, an idling water temperature sensor 2 7, and an ignition bell pepper. ^ Is input to the ECU. On the secondary side of the ignition coil 21, a spark plug 2 2 is connected. ^ Furthermore, the ECU is connected to a start relay 34, start-stop switches 36, 37, a standby indicator 38, and a fuel indicator. 39, = degree test 41, and headlight 42. The headlight 42 is provided with a dimmer switch 43. In the above sections, current is supplied from the battery 46 through the main fuse 44 and the main switch 45. In addition, 'Battery 46 has a circuit which is connected to the ECU directly via the main fuse 44 in addition to the main switch 45, in addition to being directly connected to the ECU by the start relay 34. V. Description of the invention (7 ) Figure 4 is the main part related to the swing back control of the above ECU i LtL is a:;: 3 picture / 3-phase full-wave shaping bridge circuit 400, which is composed of three groups of two FETs connected in series and connected in parallel. In the swing-back control section 7 00, the p ratio ff 4_ v The horn angle (mm) determination unit 73 of the horn angle measurement, based on the output signal of the rotation angle sensing 29, turns the crankshaft into 36 stages # 0 ~ # 35, and gW σ Turning to the knife 丨 J 1 takes the detection time of the pulse hbl generated by the ignition pulser 30 as the reference pulse phase. F soil half ^ 1 again (phase # 〇), and it is determined that the current phase passes the time detection The unit 74, | ,, and set a new stage to determine the next stage ^: The f-stage judging unit 73 determines the passage time ZUn of the segment. Reverse control μ ^, 蚪, to detect the passage time Mn of this stage, and If the duty ratio setting unit 72 detected by the inter-reversal detection unit 74 is generated, the results of u, +, and 7 are determined, and the gate voltage of the source FET supplied to the determination unit 73 of the ^ ~ = segment determination unit 73 is dynamically controlled. Operating ratio. The driving pulses that drive the operating ratios of the electric power of the cryo-shaped bridge circuit 400 are supplied to +, and the set FETs described above are provided. Next, please refer to the flowchart of FIG. 5 and use the above-mentioned swing-back control unit 7 0 0's operation. The operation description diagram of FIG. 6㈤ illustrates the crank torque required for rotation (negative reverse rotation ^ indicates that the crank shaft 201 should be reversed torque) (Crank i ng torque) The relationship between the angle of the face and the handle of the person. When cranking, it will rise sharply. The same figure (b) as shown in Table 8 & Change in the angular speed of the crankshaft with the crank angle and stage 590918 V. Description of the invention (8) ° In step S11, when it is detected that the engine is stopped, sign in step 2 and S13 in the stage The current stage that has been judged by the judging unit 73. Here, if the current stage is any of stages # 0 to # 11, proceed to step S14, and if it is any of stages # 12 to # 32, then proceed to step S15 'other' If it is the other (that is, any of stages m to m), the process proceeds to step 316. In steps su and si6, the action ratio setting unit 72 sets the action ratio of the drive pulses to the top and 80% in step S15. The dynamic control of such an effect ratio is as described in detail later. Before the reversal: before the angle corresponding to the compression top dead center of the crank torque increase during the reversal (during the reversal), the crank shaft 201 can be fully made. In addition to the reduced angular velocity, at other angles, fast reverse drive can be performed. In step S17, the driver 71 controls the power supply FETs of the full-wave rectifier bridge circuit 400 according to the function ratio set above, and starts to perform reverse power supply. In step S18, the time detection unit 74 measures the energization time Δ t n of the passed phase # η based on the above-mentioned phases. In step S19, the reverse control unit 75 determines whether or not the crank shaft 201 has passed the stage # 0, that is, near the top dead center. If stage # 0 has not been passed, then in step S21, the ratio of the passage time Atn of the above stage # 11 which has just passed to the passage time Atn of the stage # ι (η-ι) which has passed before is [Atn -1 ] Is compared with the reference value Rref (4/3 in this embodiment). If the passage time ratio [Atn / ZUn-1] exceeds the reference value Rref, the process returns to step S 1 2 to perform reverse driving, and repeats the above in parallel.

590918 Fifth, the treatment of invention description (9). Here, the engine stop position, that is, the reverse start position c), is as shown by the curve a, when it is a forward, dead 1J: the middle position from the compression of the top and bottom of Shiri / Zaobei and the second time Compression top dead point close to the next cycle 'change the old = when forward rotation) Exhaust top dead point to reach compression top dead point ^ Regardless of whether the actuator and generator 1 is reversed at a 70% action ratio = Can pass Phase # 0 (top dead center of exhaust). So step by step ^ to step ㈣. Step m When the handle shaft 201 has reached the stage coffee, in "2, because the above-mentioned reversal power is stopped, the shaft will stop after it is reversed by inertial force." Rear crank another: T side, Reverse the starting position. In Fig. 6 (c), if not, the compression of the first and second rounds will die from the compression top dead point of the previous round, that is, K; In the process of the dead point, since the compressed dead point is driven reversely according to the 70% action ratio, the reverse-reversed and generator 2 is shown in Fig. 6 (a) and is about to reach the stage # 〇 (, The angular velocity of Tianquzhang Lake will decrease rapidly. Two: ° In the second step, the above-mentioned passing time & [Atn / Atn_1;] will be stopped in the second step, and the above reverse power will be stopped in step S22, and: 4 / 3 or more rotations, the rotation will stop at about the same time when the power is turned off. Electricity and reverse driving of the crankshaft; Nan is whether the angular velocity of the reverse crankshaft has been reduced after the engine is stopped, t crankshaft 5 angles f, As well as quipped in heart, if through death

590918 V. Description of the invention (10) The tL immediately ends the reverse power supply. Even when the angular speed rotation load of the crank shaft increases and decreases, the reverse rotation power will be ended. Therefore, regardless of the starting position, the crank wheel can return to the compression reaction in front of the "thin top dead center (when reversed)". In addition, in this embodiment, since the angular velocity of the crank shaft 201 is detected based on the output of the rotor angle sensing Ϊ29 for detecting the rotor angle (that is, the stage) of the starter, it does not It is necessary to separately provide a sensor for detecting the angle of the crank shaft 〇1. (° Effect of the invention) According to the present invention, the following effects can be achieved. To (two on :: the exhaust dead center attached angle ;: If = can be predicted by: sex :, return the crank shaft to: Greek electricity, can be measured by two ^ to reach the dead point above the crank ㈣ y measured the reverse load of the crank shaft Λ μ ^ angle Zetian In front of the double top dead point (when reversing), the ^ position is-located in the calendar contraction by stopping the reversal power here; for the contrary: the position with low force is 'low'. "To make the crank shaft stop at Compression reaction (2), due to The point of the moving motor and its vicinity will be compared with the drive torque (tor (iue)) of the crankshaft, and the angular velocity i of the crank shaft will be repeated ::; set to low, so it can be reversed enough to prevent the crank shaft from passing. Deceleration in front of 2 points slows down. Therefore, not only can the shaft have reached the top dead center of compression; the corresponding angle 纟 'is also easy to detect

iiii \\ 312 \ 2d-code \ 91.〇i \ 9〇i26i53.ptd

Page 15 590918 V. Description of the invention (11) (3) When the crank shaft passes the top dead point when it reverses, it immediately stops the reversal current, and then the inertia force is used to reverse the crank shaft again, so it can be shortened. The time to energize the starter motor can reduce power consumption. (4). Since the angle of the crank shaft is detected based on the output of the sensor for detecting the rotor angle of the starter motor, there is no need to separately set the angle for detecting the crank shaft 201. [Explanation of component number] 1 Starter and generator

2 Shaking unit 3 Rear bumper 4 Bottom face 5 Steering head 6 Lower tube 7 Supervisor 8 Seat 9 Reduction mechanism 10 Belt-type stepless transmission

11 Handle 12 Front fork 13 Handle cover 14 Air filter 15 Bracket 16 Link member

Page 16 590918 V. Description of the invention (12) 17 Carburetor 18 Suspension bracket 19 Suction tube 21 Ignition coil 22 Mars plug 23 Throttle sensor 24 Fuel sensor 25 Seat switch 26 Idling switch 27 Cooling Water temperature sensor 29 Rotor angle sensor 30 Ignition pulser 34 Start relay 35 Start switch 36 Stop switch 37 Stop switch 38 Standby indicator 39 Fuel indicator 40 Speed sensor 41 Automatic controller 42 Headlight 43 Photometric switch 44 main fuse 45 main switch 1 __

Page 17 590918 V. Description of the invention (13) 46 Battery 50 Inner stator 60 Outer rotor 71 • Zone actuator 72 Function ratio setting section 73 Phase determination section 7 4 Phase passage time detection section 75 Reverse control section 100 Adjuster 201 crank Shaft 202 crank case 2 0 2L crank case 20 2R crank case 208 bearing 209 bearing 210 belt drive pulley 210R movable side pulley half 210L fixed side pulley half 210Ra cam plate sliding protrusion 211 protrusion 212 V-belt 213 crank pin 215 Cam plate 215a slide

\\ 312 \ 2d-code \ 91-01 \ 90126153.ptd Page 18 590918 V. Description of the invention (14) 216 Dry weighing ball 231 Sprocket 2 3 2 Gear 246 Bolt 2 5 3 Screw 2 79 Bolt 2 8 0 Fan 280a Central cone 281 Fan cover 28 2 Radiator 40 0 3-phase full-wave shaping bridge circuit 70 0 Swing-back control unit E 4-stroke engine FW Front wheel RW Rear wheel

Page 19 590918 Brief description of drawings Figure 1 is an overall side view of a speed locomotive to which the present invention is applied. FIG. 2 is a sectional view along a crank shaft of the rocking unit of FIG. 1. FIG. Fig. 3 is a block diagram of a starter-generator control system. FIG. 4 is a block diagram showing a configuration of a main part of the ECU of FIG. 3. FIG. FIG. 5 is a flowchart of swing back (swi n g b a c k) control. Figs. 6 (a) to (c) are operation explanatory diagrams of the swing-back control.

Page 20

Claims (1)

590918 6. Scope of patent application] · After starting and controlling the engine, the crankshaft will be reversed ^, which is mainly for the weight of an engine that is started when the engine is stopped for the next time. Contains the clothes making feature, which is characterized by the fact that the crank # is made to rotate forward and after the engine is stopped ::: moving motor; control mechanism; The crank angle detection mechanism of the message of the curvature being reversed and the dead angle corresponding to the upper point of the piston are used to detect the reversal of the above-mentioned crankshaft. The above-mentioned reverse control mechanism is the reverse load detection mechanism of f, which has been detected. The crankshaft reaches the top dead center x, and the crank angle detection mechanism responds to the rotation load detection mechanism to detect the reverse load: the degree, and the above-mentioned reverse energization according to the reverse beam. One of the earlier ones ends 2. As in the scope of the patent application, in the above-mentioned starting horse, the starting control device of $ μ ^ 莩, the driving force of the A τ horse when the horse turns around is over The upper dead point corresponds to the angle and the vicinity of the collar 'j reduces the period during which the crank shaft passes through other angular areas. —The j-th crank shaft passes 3. As in the patent application scope, the “4” reverse load detection mechanism of the engine 4 detects the reverse load based on the speed change of Han Λ. The angle 4 of the crank. · As in the engine of the third patent application, the above-mentioned starter motor includes a home-made device for detecting its return and rotation angle control, and its measurement mechanism, and the above-mentioned reverse load detection mechanism is = The change in the angular speed of the crankshaft is represented by the change in the angular speed of the crankshaft detected by the angle of rotation_, the above-mentioned angle of rotation, page 21, 590918. 6. The change in the angular speed of the starter motor detected by the patent application range detection mechanism. 5. The starting control device for an engine according to any one of claims 1 to 4, wherein the engine is a 4-stroke engine, and the crank angle detection mechanism is an ignition pulser for detecting ignition timing. _ 鲡 _ 丨 Page 22