JP4638521B2 - Method and apparatus for controlling valve operating state of intake valve or exhaust valve of engine - Google Patents

Description

The present invention is mainly applied to an exhaust valve driving device of a large diesel engine , and the valve operating state such as opening / closing timing of an engine air supply valve or exhaust valve (hereinafter referred to as “supply / exhaust valve”) and valve lift is operated. that controls the adjustment device feeding, relates to a valve operating state control method of the exhaust valves and the valve operation state controller.

  A large diesel engine is equipped with a hydraulic exhaust valve driving device, and in the exhaust valve driving device, hydraulic pressure is applied to a piston that is reciprocally fitted in a cylinder connected to the exhaust valve. Is moved to open and close the exhaust valve. The exhaust valve opening / closing timing, that is, the valve opening timing and the valve closing timing, are set by initial setting appropriate values of the valve opening timing and the valve closing timing in the exhaust valve driving device based on the test operation data or simulation calculation data of the engine. Yes.

Japanese Patent Laid-Open No. 2000-314361 discloses a technique for measuring and adjusting the fuel injection timing of a diesel engine.
In such a technique, the expansion displacement of the injection tube connected to the fuel injection nozzle is detected by the tube expansion sensor, and the peak value and the peak value of the deformation diagram of the injection tube whose outer diameter expands and contracts due to the pumping and blocking of the fuel By measuring the fuel injection start timing and the fuel injection end timing based on the phase angle, the fuel injection timings of a large number of engines in the engine assembly line can be efficiently implemented.

JP 2000-314361 A

  As described above, in a large-sized diesel engine equipped with a hydraulic exhaust valve driving device, the opening / closing timing of the exhaust valve, that is, the valve opening timing and the valve closing timing are usually optimized by the test operation data or simulation calculation data of the engine. The values are initially set, and the opening timing and closing timing of the exhaust valve during operation of the engine are operated with these initial setting values, and it is difficult to adjust during the operation of the engine. In addition, when the opening / closing timing can be adjusted during the operation of the engine, large measuring means and control means for the exhaust valve driving device are required, resulting in high cost.

Further, Oite the control equipment of the opening timing and the closing timing in the conventional exhaust valve driving apparatus, measuring, when a failure of the detection means constituting the control system has occurred, the operating system is not It becomes possible.
And so on.

In view of the problems of the prior art, the present invention can adjust the supply / exhaust valve opening / closing timing and the valve lift during valve opening to the optimum values even during engine operation with a simple system configuration. holds always proper closing timing can operate the engine, resulting performed even failure of detection means constituting the system occurs, this is influenced by such things Ku paper, the timing adjustment of the exhaust valve with high precision that supply, and an object thereof is to provide a valve operating state control method and apparatus of the exhaust valve.

The present invention is intended to achieve the object, the sheet valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) that controls the valve operating state of the opening and closing timing and valve lift of the valve actuating adjuster feed In the valve operating state control method of the exhaust valve,
Before Symbol supply, a plurality of points detected by the valve lift of the valve lift of the exhaust valves for each predetermined sampling time - plotted in time diagram, the valve lift - of the detected values of the plurality of points of the valve lift in diagram timeline calculating an intersection of the threshold of the preset valve lift and a straight line connecting at least two points before Symbol supply, as the opening timing or closing timing of the exhaust valve, and then calculates the-opening valve timing or closing timing values and fed-calculates the crank angle deviation between the target opening timing or the target exhaust valve closing timing, the crank angle deviation based prior Symbol supply, the actual valve opening timing or the actual closing timing of the exhaust valve the target valve opening timing or fed-by the valve actuation adjustment device so that the target closing timing, you and performs timing adjustment of the exhaust valve.

Further, as an apparatus for carrying out such invention, feed valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) that controls the valve operating state of the opening and closing timing and valve lift of the valve actuating adjuster feed, in the valve operating state control of the exhaust valve, before Symbol supply, a valve lift detecting means for detecting an analog signal the valve lift of the exhaust valves for each crank angle, the valve lift detecting means before Symbol supply input from the exhaust valve A valve lift-time diagram plotted by detecting a plurality of valve lifts at a predetermined sampling time, and at least two of the detected values of the valve lifts on the valve lift-time diagram. intersection previous SL feeding of the straight line and the preset valve lift thresholds connecting points, is calculated as the opening timing or closing timing of the exhaust valve, the calculated value of the open valve timing or closing timing and the previous Salary Calculates a crank angle deviation between the target opening timing or the target exhaust valve closing timing, the crank angle deviation based prior Symbol supply, the actual valve opening timing or the actual closing timing is the target opening of the exhaust valve timing before or by controlling the valve actuating adjustment device so that the target closing timing Symbol feed, feed you characterized by comprising a controller for performing a timing adjustment of the exhaust valve, the valve actuation of the exhaust valve A state control device is proposed.

According to the invention, the sheet which are entered from the valve lift detecting means to the controller, the valve lift plotted by detecting plural points a valve lift of the exhaust valves for each predetermined sampling time - with reference to time diagrams, of the plurality of points Supply the intersection of the straight line connecting at least two points of the detected value and the threshold value of the valve lift, calculate the opening and closing timing of the exhaust valve, calculate the opening and closing timing, the target opening and closing Based on the time deviation from the timing, the valve operation adjusting device is controlled so that the actual opening and closing timing becomes the opening and closing timing to adjust the timing of the supply and exhaust valves. Even with lift sampling, the opening and closing timing adjustment of the supply and exhaust valves can be performed with high accuracy.

The present invention includes a sheet valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) sheet that controls the opening and closing timing and valve lift of the valve operating state the valve actuation adjustment device, the valve actuation of the exhaust valve in state control method, before Symbol supply, a plurality of points detected by the valve lift of the valve lift of the exhaust valves for each predetermined sampling time - plotted in time diagram, the valve lift - multiple points of the valve lift in diagram timeline the detection value threshold intersection in front Symbol supply of which is set in the linear initial closing of each cycle of the engine connecting at least two points of, calculated as the opening timing or closing timing of the exhaust valve, then the open valve timing or closing timing of the calculated value and fed-calculates the crank angle deviation between the target opening timing or the target exhaust valve closing timing, the crank angle deviation based prior Symbol supply, exhaust valve There is an actual opening time of There is you and performing fed-, the timing adjustment of the exhaust valve by the valve actuation adjustment device so that the actual closing timing becomes the target opening timing or the target closing timing.

Then, as an apparatus for carrying out such invention, feed valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) that controls the valve operating state of the opening and closing timing and valve lift of the valve actuating adjuster feed, in the valve operating state control of the exhaust valve, before Symbol supply, a valve lift detecting means for detecting an analog signal the valve lift of the exhaust valves for each crank angle, the valve lift detecting means before Symbol supply input from the exhaust valve A valve lift-time diagram plotted by detecting a plurality of valve lifts at a predetermined sampling time, and at least two of the detected values of the valve lifts on the valve lift-time diagram. calculating an intersection between threshold value set in the initial closing of each cycle of linear and the engine connecting the point before Symbol supply, as the opening timing or closing timing of the exhaust valves, the open valve period Oh Rui the closing timing calculated value and fed-target opening timing of the exhaust valve or to calculate the crank angle deviation between the target closing timing, before Symbol supply on the basis of the crank angle deviation, the actual opening of the exhaust valve that time or the actual closing timing becomes have the target valve opening timing or the target closing timing to become as the valve actuation regulator control to pre-Symbol supply and a controller for performing a timing adjustment of the exhaust valve feeding you wherein proposes a valve operating state control of the exhaust valve.

According to this invention, instead of the above invention, the threshold value set at the timing at which the exhaust valve is supplied and the exhaust valve does not operate, that is, at the initial closing every cycle, is used. even when the drift occurs in the analog signal, this can be done in affected by things Ku feeding, the opening and closing timing adjustment of the exhaust valve with high accuracy.

The present invention, prior Symbol supply according to claim 1, the timing adjustment data according to the timing adjusting method of the exhaust valves, before Symbol supply according to claim 2, the timing adjustment data according to the timing adjusting method of the exhaust valves in the storage means each stores, when said claim 1 or any one timing adjustment method according to claim 2 or all becomes impractical, before Symbol feeding by using the timing adjustment data stored in the storage means The exhaust valve timing is adjusted.

According to this invention, the timing adjustment data by the plurality of supply and exhaust valve timing adjustment functions is stored in the storage means, and the stored timing adjustment data is used as needed. feed, in the case where all of the exhaust valve timing adjustment function becomes impracticable can also adjust the timing of the trouble of Ku supply, exhaust valve.

As described above, according to the present invention, the detection means for normal operation and the controller having the function of adjusting the timing of the supply and exhaust valves are used, and a special detection and control element is used. Even during the operation of the engine, it is possible to freely control the supply , exhaust valve opening timing or valve closing timing, and valve lift change at the valve opening (valve lift curve) to optimum values.
Further, a plurality of sheet, combine exhaust valve timing adjustment function, feeding, the timing adjustment of the exhaust valve multiplexed, used to extract the stored data using or by selecting each plurality of timing adjustment function of the timing adjustment function because, even if failure of the detection means is generated, it can be carried out by the fact that Ku feeding effect thereto, the timing adjustment of the exhaust valve with high accuracy.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
FIG. 1 is an overall configuration diagram of a hydraulic exhaust valve driving device and a valve operating state control device for a large diesel engine according to a first embodiment of the present invention. FIG. 2 is a diagram corresponding to FIG. 1 corresponding to the second to fourth embodiments. FIG. 3 is a control block diagram of the first embodiment, and FIG. 4 is a control block diagram of the second embodiment. FIG. 5 is an exhaust valve lift diagram in the third embodiment, and FIG. 6 is an exhaust valve lift diagram in the fourth embodiment.

In FIG. 1 showing an exhaust valve driving device and a valve operating state control device according to the first embodiment, 3 is a cylinder cover, 2 is an exhaust port, 14 is a combustion chamber, 1 is an exhaust valve for opening and closing the exhaust port 2, 21 Is an exhaust valve box.
Reference numeral 50 denotes an exhaust valve driving device, which is configured as follows.
5a is a case, 5 is a cylinder formed in the case 5a, 4 is a piston fitted in the cylinder 5 so as to be reciprocally slidable, and the piston 4 is an upper end portion of the valve rod 1a of the exhaust valve 1. It is fixed to. 6 is a hydraulic oil chamber formed with the upper surface of the piston 4 facing, and hydraulic oil is supplied to or cut off by the hydraulic oil control valve 12 through the hydraulic oil pipe 7 in the hydraulic oil chamber 6. . Reference numeral 8 denotes a return air spring piston formed at the lower part of the piston 4, which pushes back the piston 4 upward by the air pressure in the air spring chamber 9 facing the lower surface thereof.

Reference numerals 10 and 20 denote limit switches and detection targets constituting open / close valve timing detection means, and reference numeral 11 denotes a controller. The limit switch 10 transmits an ON signal to the controller 11 at a valve opening timing when the exhaust valve 1 is separated from the valve seat 3a and a valve closing timing when the exhaust valve 1 is seated on the valve seat 3a.
The controller 11 receives ON / OFF signals of the opening timing and closing timing of the exhaust valve 1 input from the limit switch 10 and performs calculation and control, which will be described later, and outputs a control signal based on the result to the hydraulic oil. The hydraulic oil control valve 12 adjusts the opening timing and closing timing of the exhaust valve 1 in the exhaust valve driving device 50 based on the control signal. Reference numeral 15 denotes an engine speed detector for detecting the engine speed, and the detected value of the engine speed from the engine speed detector 15 is input to the controller 11.

  Next, the operation of the first embodiment will be described with reference to FIG. The ON / OFF signals of the opening timing and closing timing of the exhaust valve 1 detected by the limit switch 10 are input to the valve opening / closing timing deviation detector 111 of the controller 11. Reference numeral 112 denotes a valve opening / closing timing setting unit which sets the optimal valve opening timing and the optimal valve closing timing of the exhaust valve 1 corresponding to the engine speed (may be engine load) and the operation mode (standard, low NOx, low fuel, etc.). When the detected value of the engine speed is input from the engine speed detector 15, the optimal valve opening timing and the optimal valve closing timing of the exhaust valve 1 corresponding to the engine speed are selected to open and close the valve. Input to the timing deviation detector 111.

In the valve opening / closing timing deviation detection unit 111, the detected values of the opening timing and the closing timing of the exhaust valve 1 input from the limit switch 10 and the exhaust valve 1 selected by the valve opening / closing timing setting unit 112. A time deviation (usually taking a crank angle deviation) from the optimal valve opening timing and the optimal valve closing timing, that is, the target valve opening / closing timing, is calculated and input to the valve adjustment amount calculation unit 113.
In the adjustment amount calculation unit 113, the operation amount of the hydraulic oil control valve 12 corresponding to the time deviation, that is, the hydraulic oil whose opening timing and closing timing of the exhaust valve 1 become the target opening / closing timing. The operation amount of the control valve 12 is calculated and input to the hydraulic oil control valve 12.
In the hydraulic oil control valve 12, the exhaust valve driving device 50 is driven so that the opening / closing timing of the exhaust valve 1 becomes the target opening / closing timing, and the exhaust valve driving device 50 applies the exhaust valve 1. Drives at the target opening / closing timing.

According to this embodiment, the actual opening / closing timing of the exhaust valve 1 is detected by the ON / OFF signal by the limit switch 10, and the actual opening / closing timing and the target opening / closing timing are detected by the controller 11. A time deviation (crank angle deviation) is calculated, and the hydraulic oil control valve 12 is controlled based on the time deviation (crank angle deviation) so that the actual opening / closing timing becomes the target opening / closing timing, and the exhaust valve 1 Therefore, even when the engine is in operation, the opening / closing timing of the exhaust valve 1 can be easily adjusted to the target opening / closing timing.

In the overall configuration diagram of the hydraulic exhaust valve driving device and the valve operating state control device of the second to fourth embodiments shown in FIG. 2, the valve lift of the exhaust valve 1 is changed to the crank angle instead of the limit switch 10 in FIG. A lift sensor (valve lift detecting means) 13 for detecting an analog signal for each time is provided, and an analog signal for detecting the valve lift of the exhaust valve 1 from the lift sensor 13 is input to the controller 11.
Other configurations are the same as those of the first embodiment shown in FIG. 1, and the same members are denoted by the same reference numerals.

Next, the operation of the second embodiment will be described with reference to FIGS. 4 (A) and 4 (B). An analog signal for each crank angle of the exhaust valve 1 detected by the lift sensor 13 is input to a lift time deviation calculation unit 121 of the controller 11. Reference numeral 122 denotes a lift curve setting unit, which sets a target lift curve of the exhaust valve 1 corresponding to the engine speed (or engine load) as indicated by line B in FIG. 4B, and detects the engine speed. When the detected value of the engine speed is input from the device 15, the target lift curve B of the exhaust valve 1 corresponding to the engine speed is selected and input to the lift time deviation calculation unit 121.
In this case, the target lift curve B may be set constant regardless of the engine speed.

In the lift time deviation calculation unit 121, the detected value of the valve lift for each crank angle θ from the lift sensor 13, that is, the detected lift curve indicated by line A in FIG. A time deviation at the time of the valve lift L 1, that is, a time deviation Δθ (crank angle deviation) of the valve lift is calculated and input to the lift time difference comparison unit 124.
Reference numeral 123 denotes a lift time difference threshold value setting unit in which an allowable value of time deviation of the valve lift, that is, a threshold value of time deviation is set.
The lift time difference comparison unit 124 calculates a time difference between the calculated value of the valve lift time deviation from the lift time deviation calculation unit 121 and a threshold value of the time deviation, and inputs the time difference to the adjustment amount calculation unit 125. .

In the adjustment amount calculation unit 125, the operation amount of the hydraulic oil control valve 12 corresponding to the time difference, that is, the time difference between the time deviation of the exhaust valve 1 and the threshold value becomes zero (0), so that The operation amount of the hydraulic oil control valve 12 is calculated so that the lift curve becomes the target lift curve B, and is input to the hydraulic oil control valve 12.
In the hydraulic oil control valve 12, the exhaust valve driving device 50 is driven so that the lift curve of the exhaust valve 1 becomes a target lift curve B, and the exhaust valve driving device 50 applies the target lift curve to which the exhaust valve 1 is applied. Drive at B.

According to the second embodiment, the lift sensor 13 detects the valve lift of the exhaust valve 1 by an analog signal every time, and the controller 11 detects the valve lift detection value (detection shown by line A in FIG. 4B). The time deviation (crank angle deviation) of the valve lift is calculated from the lift curve) and the target lift curve B, and the hydraulic oil control valve 12 is adjusted so that the time difference between the calculated value of the time deviation and the threshold value is within the threshold value. Since the timing of the exhaust valve 1 is adjusted, the lift curve A during the operation of the exhaust valve 1 can be adjusted to the target lift curve B even during operation of the engine, and the above-described operation can be performed according to the operating state of the engine. By changing the threshold value, it is possible to adjust the target valve opening / closing timing even when the operating speed of the valve changes.

In the third embodiment of the present invention shown in FIG. 5, the valve lift of the exhaust valve 1 is detected by the lift sensor 13 using the apparatus of FIG. Take control.
That is, the controller 11 creates a lift curve shown in FIG. 5A based on the detected valve lift value for each crank angle input to the controller 11.
Then, every time the lift curve A of the exhaust valve 1 predetermined sampling time, i.e. exhaust valves _t 1 at one open _{side, t 2, t 3, t} 4, t 5 each, the closing side _{t n, t n- 1} , t _n−2 , t _n−3 , and t _n−4 , a plurality of points (in this example, 5 points) are detected and plotted on the lift curve A. On the lift curve A, a plurality of valve lift points ( In this example, the intersection C or D of the straight line B ₁ or B ₂ connecting the detected values of 5) and the preset valve lift threshold L ₀₁ is the opening timing or closing timing of the exhaust valve 1. Calculate as

Next, a crank angle deviation (time deviation) between the calculated value C of the previous valve opening timing or the calculated value D of the valve closing timing and the target valve opening timing or the target valve closing timing of the exhaust valve 1 is calculated. Based on the crank angle deviation (time deviation), the operating amount of the hydraulic oil control valve 12 is set so that the actual valve opening timing or the actual valve closing timing of the exhaust valve 1 becomes the target valve opening timing or the target valve closing timing. Calculate and input to the hydraulic oil control valve 12.
In the hydraulic oil control valve 12, the exhaust valve driving device 50 is driven so that the opening / closing timing of the exhaust valve 1 becomes the valve opening timing or the target valve closing timing, and the exhaust valve driving device 50 controls the exhaust valve 1. The valve is driven at the valve opening timing or the target valve closing timing.

According to the third embodiment, the lift sensor 13 predetermined sampling time the valve lift of the exhaust valve 1 is input to the controller 11 from, i.e. an open side _{t 1, t 2, t 3} , t 4, t every ₅ On the closed side, a plurality of detected values (5 points) are detected by using a lift curve A that is detected and plotted for each of t _n , t _n−1 , t _n−2 , t _n−3 , and t _n−4. the intersection C or D with threshold value L ₀₁ of the preset valve lift and linear B ₁ or B ₂ connecting), said calculated as the opening timing or closing timing of the exhaust valve 1, the open valve period Alternatively, based on the time deviation between the calculated value of the valve closing timing and the target opening and closing timing, the hydraulic oil control valve 12 is controlled so that the actual opening and closing timing becomes the target opening and closing timing. Since the timing of the valve 1 is adjusted, the valve lifter with a relatively slow cycle Even pulling, can be opened and closed timing adjustment of the exhaust valve 1 with high accuracy.

In the fourth embodiment of the present invention shown in FIG. 6, the valve lift of the exhaust valve 1 is detected by the lift sensor 13 using the apparatus of FIG. Take control.
In this embodiment, the lift curve A of the exhaust valve 1 is changed at every predetermined sampling time, that is, every t ₁ , t ₂ , t ₃ , t ₄ , t ₅ on the opening side of the exhaust valve 1 and t _n on the closing side. , T _n−1 , t _n−2 , t _n−3 , t _n−4 , a plurality of points (in this example, 5 points) are detected and plotted on the lift curve A,
On the lift curve A, a straight line B ₁ or B ₂ connecting the detected values of a plurality of valve lift points (in this example, 5 points) and the timing at which the exhaust valve 1 does not operate every cycle of the engine, that is, every cycle. The intersection C or D with the threshold value L ₀₂ set at the initial closing time is calculated as the opening timing or closing timing of the exhaust valve 1.
Other controls are the same as those in the third embodiment, and the same elements are denoted by the same reference numerals.

According to the fourth embodiment, the third place to the embodiment, the exhaust valve 1 in each cycle of the engine uses a threshold L ₀₂ which is set at the initial closing of each timing i.e. 1 cycle does not operate Even when a drift occurs in the analog signal from the lift sensor 13, the opening / closing timing of the exhaust valve 1 can be adjusted with high accuracy without being affected by the drift.

  Further, the fifth embodiment of the present invention is the timing adjustment data by the timing adjustment means of the exhaust valve 1 in the first embodiment, the timing adjustment data by the timing adjustment means of the exhaust valve 1 in the second embodiment, and the third embodiment. Timing adjustment data by the timing adjustment means of the exhaust valve 1 in the example and timing adjustment data by the timing adjustment means of the exhaust valve 1 in the fourth embodiment are respectively stored in the storage means, and the first embodiment or the second embodiment. When any one or all of the timing adjusting means of the embodiment, the third embodiment, or the fourth embodiment becomes impossible to execute, the exhaust valve 1 is used by using the timing adjustment data stored in the storage means. The timing adjustment is performed.

  With this configuration, the timing adjustment data by the plurality of exhaust valve timing adjustment functions is stored in the storage means, and the stored timing adjustment data is used as needed. Even when all of the exhaust valve timing adjustment functions cannot be performed, the timing of the exhaust valve 1 can be adjusted without any trouble.

Further, the fifth embodiment of the present invention is a timing adjusting means for the exhaust valve 1 in the first embodiment, a timing adjusting means for the exhaust valve 1 in the second embodiment, and a timing adjustment of the exhaust valve 1 in the third embodiment. When any one or more of the means and the timing adjusting means of the exhaust valve 1 in the fourth embodiment become impossible to implement, the other possible means among the above means instead of the impossible means The exhaust valve timing is adjusted using the above means.

With this configuration, even when one or more of the plurality of exhaust valve timing adjustment functions cannot be performed due to failure of the detection sensor, etc., by multiplexing the timing adjustment of the exhaust valves. The exhaust valve timing can be adjusted without any trouble using other functions that can be adjusted without timing.
In the above embodiment, the present invention is applied to an exhaust valve. However, the present invention can be applied to a fuel injection valve and an intake valve of a 4-cycle engine by means similar to those in the first to sixth embodiments. Can be easily applied.

According to the present invention, with a simple system configuration, it becomes possible to adjust the supply and exhaust valve opening / closing timing and the valve lift during valve opening to the optimum values even during engine operation. made operating the engine maintains a proper closing timing, resulting performed even failure of detection means constituting the system are generated and that such Ku affected by this feeding, the timing adjustment of the exhaust valve with high precision And an exhaust valve control method and an engine equipped with the apparatus.

1 is an overall configuration diagram of a hydraulic exhaust valve driving device and a valve operating state control device for a large diesel engine according to a first embodiment of the present invention. FIG. 6 is a diagram corresponding to FIG. 1 corresponding to the second to fourth embodiments. It is a control block diagram of 1st Example of this invention. It is a control block diagram of the second embodiment. It is an exhaust-valve lift diagram in 3rd Example. It is an exhaust-valve lift diagram in 4th Example.

DESCRIPTION OF SYMBOLS 1 Exhaust valve 1a Valve rod 2 Exhaust port 3 Cylinder cover 3a Valve seat 4 Drive piston 5 Cylinder 6 Hydraulic oil chamber 7 Hydraulic oil pipe 8 Air spring piston 9 Air spring chamber 10 Limit switch 11 Controller 12 Hydraulic oil control valve 13 Lift sensor 14 Combustion Chamber 15 Engine speed detector 20 Detection target 21 Exhaust valve box 50 Exhaust valve drive device

Claims (5)

Supply valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) sheet that controls the opening and closing timing and valve lift of the valve operating state the valve actuation adjustment device, in the valve operating state control method of the exhaust valves,
Before Symbol supply, a plurality of points detected by the valve lift of the valve lift of the exhaust valves for each predetermined sampling time - plotted in time diagram, the valve lift - of the detected values of the plurality of points of the valve lift in diagram timeline calculating an intersection of the threshold of the preset valve lift and a straight line connecting at least two points before Symbol supply, as the opening timing or closing timing of the exhaust valve, and then calculates the-opening valve timing or closing timing values and fed-calculates the crank angle deviation between the target opening timing or the target exhaust valve closing timing, the crank angle deviation based prior Symbol supply, the actual valve opening timing or the actual closing timing of the exhaust valve fed-, the valve operating state control method of the paper, the exhaust valve you and performs timing adjustment of the exhaust valve by the valve actuation adjustment device so that the target opening timing or the target closing timing. Supply valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) sheet that controls the opening and closing timing and valve lift of the valve operating state the valve actuation adjustment device, in the valve operating state control method of the exhaust valves, before Symbol supply, a plurality of points detected by the valve lift of the valve lift of the exhaust valves for each predetermined sampling time - plotted in time diagram, the valve lift - of the detected values of the plurality of points of the valve lift in diagram timeline calculating an intersection between threshold value set in the linear initial closing of each cycle of the engine connecting at least two points before Symbol supply, as the opening timing or closing timing of the exhaust valve, then the open valve period or closing timing of the calculated value and fed-target opening timing of the exhaust valve or to calculate the crank angle deviation between the target closing timing, the crank angle deviation based prior Symbol supply, the actual opening timing of the exhaust valve Or the actual closing time There fed-by the valve actuation adjustment device so that the target opening timing or the target closing timing, the valve operating state control method of the paper, the exhaust valve you and performs timing adjustment of the exhaust valve. Supply valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) sheet that controls the opening and closing timing and valve lift of the valve operating state the valve actuation adjustment device, in the valve operating state control of the exhaust valve, before Symbol supply, the valve lift of the exhaust valve and the valve lift detecting means for detecting an analog signal every crank angle, the valve lift detecting means before Symbol supply input from, the valve lift of the exhaust valves for each predetermined sampling time A valve lift-time diagram plotted by detecting a plurality of points, a straight line connecting at least two points among the detected values of the valve lifts on the valve lift-time diagram and a preset valve intersection previous SL feeding the lift threshold, calculated as the opening timing or closing timing of the exhaust valve, the calculated value of the open valve timing or closing timing and the previous SL feeding, the target opening timing of the exhaust valve Or target valve closing Calculating the crank angle deviation between the timing the crank angle deviation based prior Symbol supply, the actual valve opening timing or the actual closing timing said to be the target valve opening timing or the target closing timing valve of the exhaust valve actuation regulator control to pre-Symbol supply and you characterized by comprising a controller for performing a timing adjustment of the exhaust valve sheet, valve operating state control unit of the exhaust valve. Supply valves or exhaust valves of the engine (hereinafter, "paper, the exhaust valve" hereinafter) sheet that controls the opening and closing timing and valve lift of the valve operating state the valve actuation adjustment device, in the valve operating state control of the exhaust valve, before Symbol supply, the valve lift of the exhaust valve and the valve lift detecting means for detecting an analog signal every crank angle, the valve lift detecting means before Symbol supply input from, the valve lift of the exhaust valves for each predetermined sampling time A valve lift-time diagram plotted by detecting a plurality of points, and a straight line connecting at least two points among the detected values of the valve lifts on the valve lift-time diagram and one cycle of the engine intersection previous SL supply threshold and which is set at the initial closing of each, calculated as the opening timing or closing timing of the exhaust valves, the open valve timing or closing timing of the calculated value and fed-exhaust valve Eyes Calculating the crank angle deviation between ShimegiHirakuben timing or target closing timing, the crank angle deviation based prior Symbol supply, the actual valve opening timing or the actual closing timing is the target valve opening timing or target closing of the exhaust valve before Symbol supply by controlling the valve actuating adjustment device so that the timing valve, you characterized by comprising a controller for performing a timing adjustment of the exhaust valve sheet, valve operating state control unit of the exhaust valve. Claim 1 prior Symbol supply according to the timing adjustment data according to the timing adjusting method of the exhaust valves, before Symbol supply according to claim 2, respectively is stored in the storage means to the timing adjustment data according to the timing adjusting method of the exhaust valves , when said one or all any timing adjustment method according to claim 1 or claim 2 becomes impracticable, the storage means SL before using the timing adjustment data stored in the supply, the exhaust valve feeding you and performing timing adjustment, valve operation state control method of the exhaust valves.

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