JPS60104777A - Ignition timing controller for internal-combustion engine - Google Patents

Abstract

PURPOSE:To prevent a knock from occurring, by regulating the ignition timing of an engine in a way of determining a reference ignition timing displacement in conformity with the mixture ratio of fuel in mixed types of gasoline different in an octane number, while controlling this ignition timing to be made into delayed timing control in time of knock generation afterward. CONSTITUTION:On the basis of a vibration signal generated out of a knock sensor 1, the presence of knock generation is discriminated at a knock discriminating part 2, and in time of knock discrimination, a delayed timing controlled variable is determined at a delayed timing controlled variable deterining part 3 in accordance with the output of the sensor 1. On the other hand, a knock generating ratio is calculated at a reference ignition timing displacement determining part 4, and when it is more than the specified generating ratio, a reference ignition timing displacement is shifted to the delayed timing control side as well as when it is not shifted to the delayed timing control side within a specified period of time, the displacement is shifted to the delayed timing control side, respectively. And, in accordance with the delayed timing controlled variable and the reference ignition timing displacement aforesaid, the optimum reference ignition timing being subjected to delayed timing control compensation at a first ignition timing calculator 7 is calculated, and on the basis of the operational value, the final ignition timing is secured in due consideration of the output of a crank angle sensor 8 or the like.

Description

[Detailed description of the invention]

[Technical Field of the Invention] The present invention relates to an ignition timing control device for an internal combustion engine. It is well known that Kallin's secondary tan number has a strong correlation with the severe knocking properties in internal combustion engines. In other words, gasoline with a high octane rating is less likely to cause a knock. FIG. 1 shows the ignition timing-output shaft torque characteristics of an internal combustion engine using commercially available regular gasoline and premium gasoline (which has a higher octane number than regular gasoline). Point A is the knock limit point when regular gasoline is used, and point B is the knock limit point when premium gasoline is used. Knock occurs when the ignition timing is advanced beyond the knock limit point. According to FIG. 1, when premium gasoline is used, the ignition timing can be advanced to point B, so it is possible to increase the output shaft torque compared to when regular gasoline is used. Figure 2 is an ignition timing characteristic chart showing the ignition timing at points A and B in Figure 1 in line with the rotational speed of all internal combustion engines.In an internal combustion engine with such characteristics, regular gasoline and premium gasoline When used in combination or in conversion, the output of the engine 131 can be improved by adjusting the advance depending on the ignition timing and the mixture ratio of regular gasoline and premium gasoline. [Next technology] By the way, vt;! In the 1f111 ignition device of ξ, the standard ignition timing characteristics were set only for a predetermined gasoline, for example, regular gasoline). I
, when fi is Q', that l's noise (in the quasi-ignition 111th stage special order (1st flash upward l:J: cannot be expected, the reference ignition timing must be reset in some way to 11111K) In particular, when using a mixture of regular gasoline and premium gasoline, there is a knock limit point between (A) and (B) depending on the mixture ratio, as shown by the broken line in Figure 2 (C). 1-adjustment angle iJ 0M
Resetting the ignition timing was not easy. Moreover, even if it were possible to reset the knock limit point for the line semi-ignition lRr period, the knock limit point would fluctuate depending on conditions during engine operation, such as temperature and humidity, and furthermore, the knock limit point would fluctuate depending on the conditions during engine operation, such as temperature and humidity. Since knocking is likely to occur during excessive operation such as acceleration of the first engine, knocking of the first engine should be avoided to prevent it from being used. [Summary of the Invention] The present invention has been made to address the above points in steps 1 to 1, and detects the occurrence of knocking f, 4 (output 6) by using a Notsukusenotsu, and detects the regular gasoline and premium gasoline in the bait from the detection button. By determining the base j'l, l and the ignition timing foot without indicating the mixing ratio of The mixing ratio of Cura gasoline and flammium gasoline is determined, and the reference ignition stage 1+1 is adjusted to the optimal position. Furthermore, knocking can be prevented during sudden changes in soil conditions or during transient operation during engine operation. If knocking occurs, retard the ignition timing to immediately suppress knocking 11jlJ if+,
It's a little bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit. [Actual bIM Example of the Invention] Next, the present invention will be explained in detail. FIG. 8 is a block tM diagram showing an embodiment of the present invention. In FIG. 8, (2) is a knock sensor that is attached to the engine and detects engine knock. (2) is a knock determination unit that determines whether knock has occurred from the output signal of the knock sensor (1); Bandpass filter BPF3!
υ, noise level detector), comparator (c) gives (1
4 will be completed. Bandpass filter O! The input of υ is connected to the knock sensor (connected to the 1st pin 4), and the 8s output is connected to one of the comparison human power and noise level detectors of the comparison 33e4). Thus, the output of the noise level detector) is connected to the other comparator of the comparator). (3) is a retard angle determination unit that determines the retard angle for suppressing the knock occurrence of the 5K-4 engine from the output of the knock determination unit (2). Yes, there are 4J'j volumes, A/I), and it is composed of 0'4. The integrator is connected to the output of the 4♂I human power to the comparator), and the 1 output U, A/IJ friend exchanger (, 3 human power) is connected. (4) is the engine's quasi-ignition timing. Reference ignition 1+1 period 11 (determining part and 1 pulse generator @phantom,
Consists of counter 04, timer counter, up/down counter i4, timer (4T + l, memory + I Timer II is connected to the reset input of counter 112J.Up-down counter (up-count input is connected to the output of counter 6, and down-count input is connected to timer 4. , the data input of the memory 4 is connected to the output of the up-down counter, and the data output of 1 is connected to the reset manual of the up-down counter 1441.
M(5)) and (6) are second ignition timing characteristic memory units (hereinafter referred to as ROM(6)), which are respectively stored at addresses determined by the engine speed and load as shown in Figure 4. Ignition timing data is stored. (7) is the first ignition timing generator) proportional coefficient calculator υ11 interpolator (3)) reducer υ rises to yield J'fli. The proportional coefficient calculator συ is manually connected to the output of the up/down counter 141, and converts the count contents of the up/down counter @ threat into a proportional coefficient and outputs it. The interpolation calculator C1 calculates the data of ROM (51 and ROM (6)) and proportional coefficient calculation *
- device (7o output at-manual power, ⇠OM(5) and ROM
An interpolation calculation is performed between the data in (o) using the coefficient output from the proportional coefficient calculation unit V0, and a complete ignition timing data is output by the calculation. The subtracter f731 is connected to the output of the interpolator n, the output of the interpolator (c), and the output of the biconverter 04, respectively, and calculates A/D from the ignition timing data output from the interpolator α. The output values of the converters are subtracted, and ignition timing data shifted to the retarded side is output. (8) is a crank angle sensor that detects the crank rotation angle of the engine;
9) is the pressure center that detects the intake air pressure of the Te1 engine. 01 is the second ignition IR? Jl) J 6't
3'), the pressure sensor (9), and calculate the rotation speed of the first function from the output signal of the crank angle sensor (8).
), detects the engine load condition from .Then, the ignition timing data from the 1st second ignition timing calculator 0 (t is the first ignition timing ♂j), which is the output of the %shader (the output of the subtractor (c)), is incorporated into NjC, and 1 is the crank angle center (
Based on the output signal of 8), the first ignition timing U'>
i>, H+ From the output data of (7), calculate the ignition timing performance 3.
't - Outputs the ignition rate. Oυ is jTl 'ii4. of the ignition coil Q in synchronization with the ignition signal output from the second ignition timing calculator (7). This is a switching circuit that generates the high voltage necessary to ignite the internal combustion engine. Next above? The operation of the No. 61 embodiment will be explained. FIG. 6 shows the operation of the tower section of the knock discriminating section (2). Knok sensor is a generally well-known vibration acceleration center, which is installed in the engine's cylinder block, etc., and converts the mechanical vibration of the engine into electrical vibration.
A vibration wave signal is output as shown in FIG. 5(a). Bandpass filter O! υ is a knock noise noise (by applying only the knock-specific frequency component from the output of υ to j+fi, noise components other than knock are suppressed, Fig. 5 (I))
As shown in (a), a good signal of 8/N is output. The noise level detector) can be composed of, for example, a half-wave rectifier circuit, an averaging circuit, an amplifier 1111A circuit, etc., and the output signal of the band-pass filter Qtl (Fig. The voltage is converted to a DC voltage level by wave rectification and averaging, and further amplified at a predetermined amplification degree, as shown in Figure 5 (1).
As shown in (b) of ), the noise 1 of the output of the bandpass filter cIη + tEf -W ((a) of Fig. 5(b))
The LI current voltage is outputted at a level higher than the instantaneous component and lower than the knock component. ) is a bandpass filter G! Output value of η + j (
A'r5 jz, I (a) of (b)) is compared with the output signal of the noise level 4th output (2) (Fig. 5 (middle of bl)), and if no knock occurs (4th +g+C part) is the output signal of the bandpass filter υ (Fig. 5(b)
Since (a)) of ) does not exceed the output of hj-li" ((b) of Figure 5 (bl)) to the noise level detector, DJ also does not output. 5 bl D
The output signal of the pan i/bass filter Qv (N4
5 ml (b) (a) is the noise level detector)
In order to exceed the output iU ``;' ((b) in Fig. 5 fbl), a pulse train is output as shown in Fig. 6 (C).The pulse train from the output of 9L and 1 ratio p (5th
The occurrence of knocking can be determined based on the presence or absence of the output shown in Figure (C)). Figure 6 - Retard side) till iIL determining section (3) and h
The operation of each part of the quasi-ignition 119-period amount determination bar 4J is shown. Divide the pulse train (6th do 4 + (C)) of the integrator (zu υ is Higero) into 4 ft.
<I (Outputs the integrated ?li pressure as shown in (1). When outputting the pulse train of the comparison hole 9, the pulse train operates to increase the output '1 pressure of the integrator 9. , when the pulse train does not appear 18, it operates to lower the output voltage of υ for 1 time. Then, at −℃, the output of the integrator 1)
((, pressure is A/D change 4i11!? iif when (through C, will be explained later) ignition 110° period similar to J”l i;i
(7) And! It acts as a control voltage to retard the ignition timing (according to the ignition timing data OI of SI2). In other words, when a knock occurs, the pulse train output to the comparator increases the output pressure of the 4-split divider, retards the ignition timing by -1i, and suppresses the knock occurrence. When it stops, the output voltage of integrator 0 returns the ignition timing to fj. Therefore, 10, retard i1i + I fi
lll JiL decision department (3) is the 4th (d) of the 6th ward 1(d)
Closed-loose system that retards the ignition timing in real time due to the occurrence of one knock when the output of the divider υ is exceeded by the pressure.

[
1 (forms 1 system. Output of the integrator? The rate of rise and fall of the pressure is determined by the retardation ratio due to the occurrence of knock; capacity and closed loop stability, but instant control is required. 1, I!i'j quasi-ignition timing displacement determining section (4) determines 8 (J+) of the standard ignition timing according to the degree of knock occurrence. The pulse generator 14or is aligned with the pulse train (FIG. 6(C)) output from the comparator) and outputs the pulse as shown in FIG. 6(C).In other words, the pulse generator Il+ is When a knock occurs for one ignition, a pulse is output.The output pulse of the pulse generator d41u is counted by a counter (c), and the count contents are shown in Figure NIJ6 (f). Figure 6 (g
), a pulse is output at each predetermined interval, and the
(The count value of the counter 04 is reset to zero by the pulse. In addition, the output of the counter@o is as shown in FIG. 6 (11). ) or higher, it reaches the quotient level. In other words, when a predetermined number of knocks occur within 5 iq 1 ki, the counter (44 outputs a high level i 1 constant. Also, the up/down counter i1 @ counts up by one step from the low level of the counter (44) to 11.i when the output rises to the level 1□. figure(
j) as in lzl constant lBr lii mouth pulse,
Full power is output, and due to its noise, Atsuno Town Counter H
Set the r1 stage town count to 1-. 'The count contents of the up/down counter@threat are shown in FIG. 6(i). Also,
The memory decoy stores the count value output by the up-down counter when the ignition switch is turned off or when the power supply voltage drops, and stores the count value output by the up-down counter when the ignition switch is turned on or when the power supply voltage returns. Preset as a count value. In other words, the memory 4 allows the displacement amount of the reference ignition timing to be stored and held even when the engine is stopped. As described above, the reference ignition first stage displacement direction (determining unit (4) calculates the knock occurrence rate), the sinking claw (up) in order to retard the reference ignition timing when the occurrence rate exceeds a predetermined value. If the displacement amount does not shift to the retard side within the 1H1 fixed time, the displacement amount is shifted to the advance side. Therefore, the reference ignition 1+&period 3tCfil determination section (4) also operates a first ignition timing calculation unit (7) and a second ignition timing calculation 'fJ, which will be explained later, in the same way as the retardation cape claw determination section (3). A closed loop control thread is formed through the device O0 to retard and advance the ignition timing by one knock occurrence. However, the reference ignition timing displacement amount determination section (4) differs from the retard control l1lI member determination section (3) in that the retard control R determination section (3) performs ignition in real time to suppress the occurrence of knock by knock detection. In contrast to retarding the timing, the reference ignition timing displacement amount determination unit (4) calculates the knock occurrence rate by detecting knock, and based on the result, sets the reference ignition timing to the retarded side. Alternatively, by shifting to the advance side, a reference ignition timing matching the octane number of the gasoline used is obtained. Therefore, the responsiveness of the first reference ignition timing displacement claw determining unit (4) to the advance side and the retard side is the same as the retard system.
It is set relatively slow in line with the responsiveness of the retard angle and advance angle of the determining section. Next, the first ignition timing regulator (7) will be explained. The proportional coefficient calculator 1) converts the count 1 output from the up/down counter (goods) into a proportional coefficient.
When the proportional coefficient calculator f7+1 manually inputs the count value N from the up-down counter @Ki, it divides N by the preset maximum count value NInax from the up-down counter 04I, and compares the division results. At 1, when the tJ knock limit point is relatively on the advance side when using gasoline, the count value of the up/down counter H is approximately N.
20, and the proportional coefficient becomes 0. On the contrary, when using regular gasoline, the knock limit point is on the relatively retarded side, so the 1-up-down counter (the count value of 4 slopes is approximately N = NmaX, and the proportional coefficient is 1 = 1. As shown in Figure 2 (C1) when using a mixed gasoline of Therefore, the proportionality coefficient ik is a coefficient that indicates the mixing ratio of gramium gasoline and regular gasoline. On the other hand, ⇠OM (5J and ⇠OΔ1 ) receives an address value corresponding to the engine speed and load from the second ignition timing controller Ql, and outputs the ignition timing data stored at that address to the interpolation calculator g. lLUM
(Set the 118th period ignition characteristic of ill for Premium Kallin, set the ignition timing data at the above address as θB, set the ignition timing characteristic of ILOM (a) for Recula Casorin, and set the ignition timing data at the above address as θB. If the data is θA, the ignition timing characteristic of RORi (51 is I
L (θA because it is set to the same − or advanced side as JM (6)
≦θB. Therefore, Sodama Enshoki 4 performs a proportional interpolation calculation between θA and θB using a proportionality coefficient k, that is, θB−
If (θB-θA)·k is calculated and the result is θC, θC is a value obtained by internally dividing the distance between θB and θA into (1-k). Therefore, when using premium gasoline, 2 = 0, so θC = θB, and when using regular gasoline, 21, so θC - θA) When using premium and regular mixed gasoline, 0 < k <
1, so θA<θc × θB. Therefore, θC is calculated by internally dividing θA and θB based on the proportionality coefficient k indicating the mixing ratio of premium kasoline and regular kasoline.
Therefore, even when premium Kallin and Recura gasoline are mixed, by performing the above interpolation p,
It is possible to obtain the optimal reference ignition timing according to the mixture ratio of Premium and Recura Kasoline. Furthermore) the first ignition timing performance 'j'LP! In P, (7), the subtractor (731 is the output value θ of the interpolator η
The output value θD of the A/JJ conversion g of the retard control amount determination unit (3) is subtracted from C, and the ignition timing data of θB (=θC−θD) is sent to the second ignition timing calculator 0 (see Output.In other words, for the optimum reference ignition timing obtained by the 1-interval calculation unit Vuku,
In order to suppress knocking that occurs during transient operation of the engine or when environmental conditions suddenly change, the retardation control f1 is subtracted to retard the reference ignition timing. The second ignition timing calculator θ calculates the ignition timing using the ignition timing data (output value θE of the p reducer (73)) using the E of the crank angle sensor (8) as a reference, and outputs the ignition 1d. Since this is a well-known technique in the field of ignition timing control devices, its explanation will be omitted here.Next, we will look at a second embodiment of the present invention.This embodiment is based on the N41. The configuration and connection of the crystal ignition 11q stage position determining section (4) and the configuration of the ignition stage 9 determining section (4) and the configuration of the ignition stage (7) are different from the embodiment. In the example lr (showing the formation), in Fig. 7, (40 is the retard/advance determiner, (402) is the timer l, (408) tj
Timer 1 (404) is an up/down counter (40
5) is a memory, (7o1) is an adder, (702) is a proportional coefficient calculation, and (708) is a 4-piece abstraction calculation unit.
The same reference numerals as 8I indicate the same parts. Note that the up/down counter (404), memo+) (405), proportional coefficient calculator (70 phantom), and interpolation calculator (708) are the up/down counter 0411 memo')' of the first embodiment.
AQz proportional coefficient calculator 1) 1 interpolation nl ”f=M
They are the same as U'A. The retard angle/advance angle determiner (401) is connected manually to the output (A/D converter-phrase output) of the retard side tl jit determination unit (3), and the output is connected to the lead angle determination output and the retard angle determination unit (401). It has two outputs of judgment output, and A
/D converter (compares the output image of 3 seconds with a predetermined dawn, and outputs a signal from the advance angle judgment output or the retard angle judgment output according to the comparison result. The manual power of the timer l (402) Judgment: It is connected to the angle judgment/output of Kei (4o1), and the 1st output is connected to the araf currant human power of the up/down counter (404).The input of the timer l (408) is the retard/advanced angle judge (401). The output is connected to the advance angle judgment output of the up/down counter (404).The output of the memory (405) is connected to the output of the up/down counter (404), and the output is connected to the up/down counter (404). Preset manual K of counter (404)
The adder (701) has two inputs, one of which is the output of the reference ignition timing and amount determining section (4).
(connected to the output of the up/down counter (404))
The other end is connected to the output (to the A/D converter) of the retard side 131ft determining section (3). And KaZ? - vessel (
70 output is proportional coefficient function) 1. (702). An interpolation calculator (708) manually inputs the data of ILOM (51 and OM (6)) and the output value of the proportional coefficient calculator (702), and calculates one calculation result t - second ignition timing calculator θ.
Output to O. The configuration of other parts is the same as the first example. FIG. 8 shows the operation of the reference ignition timing position amount determination unit (4) in the second embodiment, and FIG. 8(d) shows the integral a;
The output of the A/D converter O→ indicates the pressure at the output cuff of the output cuff. Retard angle/advance angle judger (The 40 has two comparison reference values, one is the retard angle judgment value and the other is the advance angle judgment value. The output hn of is compared with the retard angle judgment value and the advance angle judgment value. Fig. 9 shows the output mode of the retard angle/1ji4 angle judger (401). When 111 kv is equal to or higher than the retard angle judgment value 71, the retard angle mode is set, and the retard angle judgment output is set to a high level as shown in Fig. 8 (l()), and when it is lower than the advance angle judgment value V2, the advance angle mode is set. mode, the lead angle determination output is set to the city level as shown in FIG. 8(1), and when it is between Vl and 2, the stop mode is entered and both the angle determination output and the advance angle determination output are at a low level. During the timer l (402), the angle/advance angle determiner (401) outputs a predetermined one interval iσ as shown in FIG. 8(m) while the angle determination output is at a high level).
(40B) outputs a pulse as shown in FIG. 8(n) every H [steady interval] while the advance angle determination output of the retard/advanced angle determiner (401) is at a high level. FIG. 8(p) shows the count contents of the up/down counter. up/down counter (
404) &, i The output pulse of the timer I (402) is arf-curranted, and the output pulse r of the timer I (40B) is down-counted]. When the output 1It (output value of the A/DR converter (output value) of the A/D R converter (output value) of the delay angle 1jll) is larger than the retardation judgment value vI, the mode is set to retardation mode and the up/down counter (404 ) is increased, and if it is smaller than the single advance angle judgment value ■2, it becomes advance angle mode and the count value of the up-down counter (404) is lowered. Between SVI and ■2, the uptown counter (
404) is retained. Next, the I-th ignition timing performance n, the timer (
The operation of 7) will be explained. The addition J'f and the delay (7ot) are the output values of the retard control IIl foot determination section (3) (the output 111 () of the A/D converter 4) and the base 1X11 ignition timing position determination section (4). Output f++'t (up/down counter (4
0 output value) and J? − Yes 〇 Delay control control decision section (
The output value of 3) is the retard angle flill (illll 'J'<'t
r, indicates, reference ignition timing &B'll JrL decisive part (
The output value of 4) indicates the amount of black adjustment at the standard ignition period of 116 according to the octane number of the used Karin. The ItE 1 adder (701) outputs the phase of the adjustment amount of the retard 1III side 1 and the reference ignition timing. The proportional coefficient calculator (702) applies the output value of addition 'ag (7'') to the proportional coefficient, and the interpolator (708) applies the output value of addition 'ag (7'') to the ROM (51 and R
The ignition 111th period data of OM (6) is processed by the proportional coefficient calculator (7
The interpolation n lower is carried out using the proportional coefficient outputted by 02) in the same manner as described in the first embodiment. In this way, in the second embodiment, the reference ignition 11 stage and position determining section (4) retards i1i! Ill ffl
The determination unit (3) determines retardation/advance based on the output value, determines the standard ignition timing adjustment amount, and then compares the output value of the retard side determination unit (3) with the base. , Tii Ignition II! jJllll
Based on the sum of the output values of the displacement claw determining section (4), the ignition timing
Do n. In addition, in the above two embodiments,! Quasi-ignition father position J
1, the determining section (4) and the first ignition timing characteristic diagram (7) are the first
It is possible to interchange the values of Qi and the second example Qi. [Effects of the invention] That's it! As explained above, according to the present invention, when regular gasoline and premium gasoline are mixed and used, knock is detected by the first knock sensor, and based on that, the semi-ignition
+: 7iM yl' on regular and premium mixed gasoline by fishing J, J, and J in the J period.
4 ignition at 1 time (semi-ignition 1j without timing)
11+, il, 17 verses can be added, and t
Even in the case of transient operation 116 of Q14η or a sudden change in environmental conditions, by retarding the ignition ++1 period in Real Tights, there is an effect that knock occurrence can be immediately suppressed.

[Brief explanation of drawings]

Fig. 1 is an output shaft torque characteristic diagram, Fig. 2 is an ignition timing characteristic diagram of the engine, No. 8 is a block configuration diagram showing the first embodiment of the present invention, and Fig. 4 is an ignition timing characteristic diagram. Fig. 5 is an explanatory diagram of the operation of the knock discriminator (2), and Fig. 6 is an illustration of the retard angle flil.
j Explanation of operation of the shell determining section (3) and the semi-ignition timing base determining section Figure 1 Figure 7 is a block diagram showing the second embodiment of the present invention Operation example 1 of the reference ignition timing and timing determination unit (4) in the example of 14) Figure 9 shows the retard/advance timing] Output mode 1 status clear diagram of constant gradual (401) It is. (1) is a knock sensor, (2) is a knock discrimination unit, (3)
(4) is the semi-ignition timing and M determining unit, and (5) is the I-th ignition 119 period characteristic storage unit t(01).
The second ignition timing characteristic storage section, (7) indicates the first ignition timing, (3) the ignition of the 2-ink angle, (9) the pressure sensor, QIl, J, and 52 ignition. 11q period calculation HL
Oυ is a switching circuit, and 04 is an ignition coil. In addition, the same symbols in the figures are the same or eyotl. 11X
Min'r: Show. Daichi Roku Oiwa power increase [Figure 1 ui 21'4 Figure 4, 414 1 I/K ') Figure 1 rc* 11111111111., lll IN-I
11111□(e) II-fl, I”llll-11
-,fl,n,,n n,,---old(J)"-m-"
- Ding 1. “Koura Masashi (self', +'r >1'4+
'j'll 'I length 1' H1 1, 1 of ll1i. Indication ↑Blank (i Showa 58-2181328 1. Name of the invention (
4. Inside! ;,51”i Ill Ignition 114B ,Q,ll
1itil 1・11do', Xj j:1:3, tl
li If(?iJ' 2 M generation:! and ha mountain f
8 Part 5, Supplement J "Object of Mulberry IT?"
11 people or agents (!ゝ1, 7'P invented by Yoshi Akehata
A11l, amei's 11. jl. 6. t+U correct content (sugill ”Jj Qi page 2, line 5 “Question direct 1・-
[Attachment corrected the furigana of Royo to be 1 Danno Yoshiaki;
11 As per j71, r Sanno. (2) Correct 1 ignition timing in line 19 of page 2 of the specification by adding 1 point to ignition timing. (20 Same Secretary 21 @ Insert the following sentence between line 7 and line 8.' Also, in the above embodiment, each control unit 1, that is, the reference ignition timing change 437:・;Determining unit (4) , ROM
(5), ROM (G), ignition timing i'jri 0 part (
7), (It is clear that matters such as 11 can be processed using software on a known computer.

Claims (1)

[Claims] A knock sensor detects knock of the internal combustion engine, a knock determination means determines whether knock has occurred based on the output of the knock sensor, and a retard side ill determines a retard angle f1M for suppressing knock occurrence from the output of the knock determination means. h
The reference ignition timing displacement ji! which determines the displacement position of the reference ignition timing of the engine from the output of the t determining means, the above-mentioned knock discrimination means, or the above-mentioned angle reduction one-claw determining means! , an ignition timing function that determines the ignition timing of the engine according to the outputs of this reference ignition timing position determining means and the retard side tlJa determining means. 116th generation device for ignition of internal combustion engine equipped with 1 means.