JPS60111935A - Combustion monitoring apparatus - Google Patents
Combustion monitoring apparatusInfo
- Publication number
- JPS60111935A JPS60111935A JP21955683A JP21955683A JPS60111935A JP S60111935 A JPS60111935 A JP S60111935A JP 21955683 A JP21955683 A JP 21955683A JP 21955683 A JP21955683 A JP 21955683A JP S60111935 A JPS60111935 A JP S60111935A
- Authority
- JP
- Japan
- Prior art keywords
- output
- sensor
- internal pressure
- cylinder internal
- crank angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 title claims description 3
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000012806 monitoring device Methods 0.000 claims description 7
- 230000005616 pyroelectricity Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/08—Testing internal-combustion engines by monitoring pressure in cylinders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、内燃機関等の燃焼状態を監視する燃焼監視装
置に関し、特にシリンダ内圧センサの出力をドリフト狽
に応じて補正するようにしたものでおる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion monitoring device for monitoring the combustion state of an internal combustion engine, etc., and particularly to a combustion monitoring device that corrects the output of a cylinder internal pressure sensor in accordance with drift.
従来、この種の燃焼監視装置としては特公昭+/−5i
slI号があシ、例えば第1図(4)および第1図(B
)に示すようなものがある。すなわち、一対の圧電素子
/を電極2および3で挾んでモールド成形によりリング
状のシリンダ内圧センサlを形成し、このセンサlを゛
第λ図に示すように、点火栓jの座金として用いて、一
定の初期圧力を与えられた状態で燃焼室乙の外壁である
シリンダヘッド7に取付けている。そして、燃焼時の燃
焼室を内の7リング内圧を点火栓jを介してこのシリン
ダ内圧センサグに作用させ、七ンサダに作用する力に対
応して圧電素子lに発生する電荷を取り出し、この電荷
の変化により燃焼室6内の燃焼状態を監視している。Conventionally, this type of combustion monitoring device was the Tokko Sho+/-5i.
slI number, for example, Figure 1 (4) and Figure 1 (B
) are shown below. That is, a ring-shaped cylinder internal pressure sensor l is formed by sandwiching a pair of piezoelectric elements between electrodes 2 and 3, and this sensor l is used as a washer for a spark plug j, as shown in Fig. It is attached to the cylinder head 7, which is the outer wall of the combustion chamber B, with a constant initial pressure applied thereto. Then, the internal pressure of the seven rings inside the combustion chamber during combustion is applied to this cylinder internal pressure sensor via the spark plug j, and the electric charge generated in the piezoelectric element l in response to the force acting on the seven cylinder is taken out. The combustion state within the combustion chamber 6 is monitored based on the change in .
しかしながら、このような従来の燃焼監視装置ffにあ
っては、機関の温度変化によりシリンダ内圧−センサの
圧電素子に伝導される熱h1が変化するので、圧電素子
にパイロ電気が発生してシリンダ内圧センサの発生電荷
がドリフトし、特に機関の加減速運転条件下ではそのド
リフトのために正確なシリンダ内圧を検出できないとい
う間;須点があり、また、センサ出力特性が経時変化す
るので正確なシリンダ内圧を検出できないという問題が
あった。However, in such a conventional combustion monitoring device ff, since the cylinder internal pressure - the heat h1 conducted to the piezoelectric element of the sensor changes due to engine temperature changes, pyroelectricity is generated in the piezoelectric element and the cylinder internal pressure changes. The electric charge generated by the sensor drifts, and the drift makes it impossible to accurately detect the cylinder internal pressure, especially under engine acceleration/deceleration operating conditions. There was a problem that internal pressure could not be detected.
本発明は、このような従来の問題点に着目してなされた
もので、シリンダ内圧センサの出力をドリフトに相当す
る所定のクランク角度での出力差により補正することに
より、上述の問題点を解決した燃焼監視装置を提供する
ことを目的としている。The present invention has been made by focusing on such conventional problems, and solves the above problems by correcting the output of the cylinder internal pressure sensor by the output difference at a predetermined crank angle corresponding to drift. The purpose is to provide a combustion monitoring device that
以下、図面を参照して本発明の詳細な説すJする。Hereinafter, the present invention will be explained in detail with reference to the drawings.
第3図は本発明燃焼監視装置の+1り成の一例を示し、
ここでシリンダ内圧センサグは点火栓Sの座金として燃
焼室乙のシリンダヘッド7に数個られ、シリンダ内圧に
相当するシリンダ内圧センサ出力S/を発生する。ざは
機関のクランク角度を検出して/、rO0信号S3およ
びパ信号St/、とを発生するクランク角センサ、9は
クランク角センサlがらのパ信号S+をラッチしてA/
D (アナログ−デフタル)変換器IOを作動させるラ
ッチ回路であり、A/D変換器IOはラッチ回路りから
の出力に同期してクランク角10毎にシリンダ内圧セン
サlの出力S/をA/D変換する。//Aは記憶回路で
あり、ラッチ回路9Aにより/100毎にA/D変換W
/θの出力を記1.aシておく。この記憶回路//Aの
出力とA / D変換器/θとの出力が出力補正回路l
/に入力されており、′1gO°毎に、A/D変換器I
Oの出力から、記憶回路//Aの出力を引き算する。/
2はこの出力補正回路//で補正された信号をNIA
(デジタ・ルーアナログ)変換するD/A変換器である
。FIG. 3 shows an example of the +1 configuration of the combustion monitoring device of the present invention,
Here, several cylinder internal pressure sensor tags are installed in the cylinder head 7 of the combustion chamber B as washers for the ignition plug S, and generate a cylinder internal pressure sensor output S/ corresponding to the cylinder internal pressure. A crank angle sensor 9 detects the engine crank angle and generates an rO0 signal S3 and a signal St/, and a crank angle sensor 9 latches the signal S+ from the crank angle sensor l and outputs a
This is a latch circuit that operates the D (analog-defthal) converter IO, and the A/D converter IO changes the output S/ of the cylinder internal pressure sensor l to A/ every 10 crank angles in synchronization with the output from the latch circuit. D-convert. //A is a memory circuit, and the latch circuit 9A performs A/D conversion W every /100.
Write down the output of /θ1. Leave it a. The output of this memory circuit//A and the output of the A/D converter/θ are connected to the output correction circuit l.
/, and every '1gO°, the A/D converter I
The output of the memory circuit //A is subtracted from the output of O. /
2 is the signal corrected by this output correction circuit // to the NIA
It is a D/A converter that performs (digital to analog) conversion.
次に、第を図の信号波形図を参照して、第3図の出力補
正回路/lの動作例を説明する。まず、シリンダ内圧セ
ンサlは第3図に示すように、点火栓5の座金としてシ
リンダヘッド7に取付けられ−Cいるため、2’J 4
’図に示すように、そのシリンダ内圧センサ出力S/は
シリンダ内圧が大気圧と等しい時にOVの電位となる。Next, an example of the operation of the output correction circuit /l shown in FIG. 3 will be described with reference to the signal waveform diagram shown in FIG. First, as shown in FIG. 3, the cylinder internal pressure sensor l is attached to the cylinder head 7 as a washer for the spark plug 5, so 2'J4
As shown in the figure, the cylinder internal pressure sensor output S/ has a potential of OV when the cylinder internal pressure is equal to atmospheric pressure.
したがって、センサtの温度(以下、センサ温度と称す
る)が常温の場合には、排気弁が閉じる排気上死点(1
,〜13)のクランク角度で、そのシリンダ内圧センサ
出力S/はOVとなる。ところが、エンジンを加速した
後ではセンサ温度が上昇してパイロ電気が発生するため
センサ出力S/はドリフトし、排気上死点(t4〜t6
)テノセンサ出力S/はΔv1.Δv2およびΔ■3と
なってOVとならない。Therefore, when the temperature of sensor t (hereinafter referred to as sensor temperature) is normal temperature, the exhaust valve closes at exhaust top dead center (1
, to 13), the cylinder internal pressure sensor output S/ becomes OV. However, after accelerating the engine, the sensor temperature rises and pyroelectricity is generated, so the sensor output S/ drifts and reaches exhaust top dead center (t4 to t6).
) Tenosensor output S/ is Δv1. Δv2 and Δ■3, which does not result in OV.
そこで、出力補正回路//ではクランク角センサざのi
ro°信号S3に同期し7て、上述の排気」二死点での
センサ出力値Δv1.Δ■2およびΔV3をラッチし、
このラッチした値を次の燃焼サイクル中でのセンサ出力
S/から順次減算する。このようにして減算した値をD
/A変換器/2によりアナログ値8.2に変換する。よ
って、D/A変換器/2から?i)ら汎る検出信号S2
は第を図で実線で示すように、圧電素子の湿度変化によ
り生じるパイロ電気による出力ドリフトが補正される。Therefore, in the output correction circuit//, the i of the crank angle sensor is
In synchronization with the ro° signal S3, the above-mentioned sensor output value Δv1. Latch Δ■2 and ΔV3,
This latched value is sequentially subtracted from the sensor output S/ during the next combustion cycle. The value subtracted in this way is D
/A converter/2 converts it to an analog value of 8.2. Therefore, from D/A converter/2? i) Detection signal S2 spreading from
As shown by the solid line in the figure, the output drift due to pyroelectricity caused by changes in the humidity of the piezoelectric element is corrected.
・ 第5図は本発明の他の実施例を示し、ここで73は
図ボしない吸気管の圧力を検出する吸気管圧センサ、/
りはクランク角センサrが発生する/ざ。′信号S6お
よびパ信号S7をラッチするラッチ回変換器、/6はA
/D変換器の出力を補正する出力補正回路、/7は出力
補正回路/4の出力をD/A変換するD/A変換回路、
1gは絞弁全閉を検知する絞弁全閉スイッチであり、絞
弁全閉スイッチ/gの出力は補正回路/7に供給される
。NIAはランチ回路であシ、lざO°毎に記憶回路/
6Aをラッチさせる。この記憶回路/lはA/D変換H
g ts比出力入力とし記憶回路/4Aの出力を出力補
正回路/乙の入力とする。・ FIG. 5 shows another embodiment of the present invention, where 73 is an intake pipe pressure sensor that detects the pressure in the intake pipe, which is not shown in the figure;
This is caused by the crank angle sensor r. 'Latch converter that latches signal S6 and signal S7, /6 is A
/7 is an output correction circuit that corrects the output of the D converter; /7 is a D/A conversion circuit that D/A converts the output of the output correction circuit /4;
1g is a throttle valve fully closed switch that detects the throttle valve fully closed, and the output of the throttle valve fully closed switch /g is supplied to a correction circuit /7. NIA is a launch circuit, and there is a memory circuit/
Latch 6A. This memory circuit /l is A/D conversion H
g ts ratio output input and the output of the memory circuit/4A as the input of the output correction circuit/B.
シリンダ内圧センサlは前実施例と同様に燃焼室乙のシ
リンダヘッド7に点火栓jの座金として取付けられ、シ
リンダ内圧に(目当する出力SSを発生し、この出力S
!は吸気・冴圧センサの出力s9とともにA/D変換器
/sに供給される。一方、クランク角センサざから発生
した/100信号S6および10信号S7はラッチ回路
/グでラッチされ、A/D変換器/3を作動するのに用
いられる。A/D変換器/Sはラッチ回路/4Iによシ
作動されて、クランク角パ毎にシリンダ内圧センサ出力
Sjをデジタル信号に変換し、また、クランク角/ざ0
°毎に吸気?’?圧センサ13の出力をデジタル信号に
変換して出力補正回路/6に送出する。As in the previous embodiment, the cylinder internal pressure sensor l is attached to the cylinder head 7 of the combustion chamber B as a washer for the spark plug j, and generates the desired output SS to the cylinder internal pressure.
! is supplied to the A/D converter/s together with the output s9 of the intake air pressure sensor. On the other hand, the /100 signal S6 and the 10 signal S7 generated from the crank angle sensor are latched by the latch circuit /G and used to operate the A/D converter /3. The A/D converter/S is actuated by the latch circuit/4I, converts the cylinder internal pressure sensor output Sj into a digital signal for each crank angle, and also converts the cylinder internal pressure sensor output Sj to a digital signal at each crank angle/ramp.
Inhale every °? '? The output of the pressure sensor 13 is converted into a digital signal and sent to the output correction circuit/6.
ラッチ回路/FAは/ざ00毎にラッチ信号を発生して
記憶回路/iを作動させる。記1.@回路/6AはA/
D変換8H15の吸気管圧センサ出力をito ’毎に
記憶する。出力補正回路/6ばA/D変換1’f、 /
3のシリンダ内圧センサ出力を記憶回路/4Aの出力に
より補正する。こうして補正された出力はD/A変換器
/7によりアナログ信号Sざに変換される。The latch circuit /FA generates a latch signal every time /00 to operate the memory circuit /i. Note 1. @Circuit/6A is A/
The intake pipe pressure sensor output of D conversion 8H15 is stored for each ito'. Output correction circuit/6ba A/D conversion 1'f, /
The cylinder internal pressure sensor output of No. 3 is corrected by the output of the memory circuit/4A. The thus corrected output is converted into an analog signal S by the D/A converter/7.
なお、第3図の実施例ではシリンダ山川センーリの出力
ドリフト補正のみを行うものであったが、本例ではこの
出力ドリフ) ′fIli正に加えて、センーリー出力
特性のばらつきや経時変化の補正も行うようにしたもの
である。In addition, in the embodiment shown in Fig. 3, only the output drift of the cylinder Yamakawa sensor was corrected, but in this example, in addition to this output drift ()'fIli positive, correction is also made for variations in sensor output characteristics and changes over time. This is what I decided to do.
次に、第6図の信号波形図を参照して第5図の出力補正
回路l乙の動作例を説明する。Next, an example of the operation of the output correction circuit lB shown in FIG. 5 will be described with reference to the signal waveform diagram shown in FIG.
絞弁全閉スイッチ/gの出力が絞弁全閉を示すオン状態
であり、かつクランク角七ンサざの出力の発生割合が所
定値以下であるアイドル運転条件時において、以下に示
す出力絶対値の補正gX数を出力補正回路/乙で演算す
る。すなわち、まず第3図の実施例と同様にシリンダ内
圧センサtの出力Sjを排気上死点(1,〜16)での
大気圧とセンサ出力との偏差Δv1.ΔV2およびΔ■
5に応じて補正し、この補正値(7次補正値)をシリン
ダ内圧センサ出力Sj’とする。Under idling operating conditions in which the output of the throttle valve fully closed switch/g is in the ON state indicating that the throttle valve is fully closed, and the output generation rate at the crank angle is below a predetermined value, the output absolute value shown below The correction gX number is calculated by the output correction circuit/B. That is, first, as in the embodiment shown in FIG. 3, the output Sj of the cylinder internal pressure sensor t is calculated by calculating the deviation Δv1. between the atmospheric pressure at exhaust top dead center (1, to 16) and the sensor output. ΔV2 and Δ■
5, and this correction value (seventh correction value) is set as the cylinder internal pressure sensor output Sj'.
一方1機関のアイドル条件では、点火進角値が小さく、
かつ初期燃焼が遅いため、圧縮上死点でのシリンダ内圧
は、吸気管圧力Pを圧縮したものとなる。よってぐ圧縮
上死点(クランク角T2)でのセンサ出力SSの出力値
V2から吸気下死点(クランク角T1)でのセンサ出力
S5の出力値V、を減算した値“■2−■1″′は、吸
気管圧力Pに比例した値1(x(ρ−/)XPと等しく
なる。ただし、kおよびρは定数であり、kはシリンダ
内圧七ンサダの出力係数、ρは機関の圧縮比である。On the other hand, under the idle condition of one engine, the ignition advance value is small,
In addition, since the initial combustion is slow, the cylinder internal pressure at compression top dead center is the compressed intake pipe pressure P. The value obtained by subtracting the output value V of the sensor output S5 at the intake bottom dead center (crank angle T1) from the output value V2 of the sensor output SS at the compression top dead center (crank angle T2) is "■2 - ■1 ``' is equal to the value 1 (x (ρ - /) It is a ratio.
そこで、次に出力補正回路/乙にょシ以下の(1)式に
基づいて補正値V′を演算し、この補正値V′をD/A
変換器/7でD/A変換して信号s、rを得る。ここで
、(1)式のVは上述のシリンダ内圧センサ出力st’
の値(1次補正値)である。Therefore, next, a correction value V' is calculated based on equation (1) below, and this correction value V' is
A converter/7 performs D/A conversion to obtain signals s and r. Here, V in equation (1) is the cylinder internal pressure sensor output st'
is the value (primary correction value).
従って、D/A変換器/7から得られる補正後の出力S
ざは第を図に示すように、パイロ電気による出力ドリフ
ト補正に加えて、センザ出カ特性のばらつきや経時変化
の絶対値も補正されたものとなり、シリンダ内圧を正確
に検出して燃焼監視のy、+1度向上を得ることができ
る。Therefore, the corrected output S obtained from the D/A converter/7
As shown in the figure, in addition to the output drift correction using pyroelectricity, the absolute value of variations in sensor output characteristics and changes over time are also corrected, making it possible to accurately detect cylinder internal pressure and monitor combustion. y, +1 degree improvement can be obtained.
以上説明してきたように、本発明にょItば、シリンダ
内圧センサの出力をドリフトに相当するJ夕r定のクラ
ンク角度での出方値を差引いでMlt正しているので、
圧電素子の温度変化により生じるパイロ電気による出力
ドリフトを補正できる。さらに、本発明では、アイドル
条件のときの圧縮上死点でのセンサ出力の出力値と吸気
下死点でのセン′V−出力の出力値を用いて所定の演)
fをt〕うことにより、出力ドリフトの補正に加えて、
センザ出カ特性のばらつきや経時変化の補正をすること
ができるという効果が得られる。As explained above, according to the present invention, the output of the cylinder internal pressure sensor is corrected by subtracting the output value at a constant crank angle, which corresponds to the drift.
It is possible to correct output drift due to pyroelectricity caused by temperature changes in the piezoelectric element. Furthermore, in the present invention, a predetermined calculation is performed using the output value of the sensor output at the compression top dead center and the output value of the sensor'V- output at the intake bottom dead center under idle conditions.
In addition to correcting the output drift, by changing f to t],
This provides the advantage of being able to correct variations in sensor output characteristics and changes over time.
なお、本例のシリンダ内圧センサは点火栓の座金として
用いたが、これに限らず、シリンダヘッドボルトの座金
として用いてもよいのは勿論である。Although the cylinder internal pressure sensor of this example is used as a washer for a spark plug, it is of course not limited to this and may be used as a washer for a cylinder head bolt.
第1図(A)はシリンダ内圧センサの構成例を示す平面
図、
第1図(B)はそのI−1線に沿う縦断面図、第一図は
そのシリンダ内圧センサを機関に取付けた状態の一例を
示す縦断面図、
第3図は本発明の一実施例の構成を示すブロック線図、
第7図はその各部の信号波形の一例を示すタイミングチ
ャート、
第5図は本発明の他の実施例の構成を示すブロック線図
、
第6図はその各部の信号波形の一例を示すタイミングチ
ャートである。
l・・・圧電素子、
2.3・・・電極、
l・・・シリンダ内圧センサ、
j・・・点火栓、
6・・・燃焼室、
7・・シリンダヘッド、
ざ・・・クランク角センサ、
ワ、 /4’・・・ラッチ回路、
/θ、 /3・・・A/D変換器、
// 、 、#;・・・出力補正回路、/2 、 /7
・・・D/A変換器、
/3・・・吸気管圧センサ、
1g・・・絞弁全閉スイッチ、
S/ 、 S!;・・・シリンダ内圧センサ出力、S2
、3g・・・D/A変換器出力、S3 、34 ・/
100信号、
S4(、87・・10信号、
S9・・・吸気管圧センサ出力。
第1図(A)Figure 1 (A) is a plan view showing an example of the configuration of the cylinder internal pressure sensor, Figure 1 (B) is a vertical cross-sectional view taken along line I-1, and Figure 1 shows the cylinder internal pressure sensor installed in the engine. FIG. 3 is a block diagram showing the configuration of an embodiment of the present invention; FIG. 7 is a timing chart showing an example of signal waveforms of each part thereof; FIG. 5 is a diagram showing other embodiments of the present invention. FIG. 6 is a block diagram showing the configuration of the embodiment. FIG. 6 is a timing chart showing an example of signal waveforms of each part. l...Piezoelectric element, 2.3...Electrode, l...Cylinder internal pressure sensor, j...Ignition plug, 6...Combustion chamber, 7...Cylinder head, Z...Crank angle sensor , wa, /4'...Latch circuit, /θ, /3...A/D converter, //, , #;...Output correction circuit, /2, /7
...D/A converter, /3...Intake pipe pressure sensor, 1g...Throttle valve fully closed switch, S/, S! ;...Cylinder internal pressure sensor output, S2
, 3g...D/A converter output, S3, 34 ./
100 signal, S4 (, 87... 10 signal, S9... intake pipe pressure sensor output. Fig. 1 (A)
Claims (1)
するシリンダ内圧センサと、前記機関のクランク角度を
検出して検出信号Tを発生するクランク角度センサとを
有し、シリンダ内圧力が大気圧となる所定のクランク角
度Toでのシリンダ内圧センサの出力値Voを測定して
、前記出力Vから該出力値voを減じたV−Voの演算
値マを出力する燃焼監視装置。 2、特許請求の範l!fl第1項記載の装置において、
前記クランク角度Toは前記シリンダ内圧センサが取付
けられた気筒の排気弁が閉じるクランク角度であること
を特徴とする燃焼監視装置。[Scope of Claims] 1) A cylinder internal pressure sensor that detects the internal cylinder pressure of an engine and generates a detection output V, and a crank angle sensor that detects the crank angle of the engine and generates a detection signal T. , combustion that measures the output value Vo of the cylinder internal pressure sensor at a predetermined crank angle To at which the cylinder internal pressure becomes atmospheric pressure, and outputs the calculated value Ma of V-Vo, which is obtained by subtracting the output value Vo from the output V. Monitoring equipment. 2. Scope of patent claims! fl. In the apparatus described in item 1,
A combustion monitoring device characterized in that the crank angle To is a crank angle at which an exhaust valve of a cylinder to which the cylinder internal pressure sensor is attached closes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21955683A JPS60111935A (en) | 1983-11-24 | 1983-11-24 | Combustion monitoring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21955683A JPS60111935A (en) | 1983-11-24 | 1983-11-24 | Combustion monitoring apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60111935A true JPS60111935A (en) | 1985-06-18 |
Family
ID=16737354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21955683A Pending JPS60111935A (en) | 1983-11-24 | 1983-11-24 | Combustion monitoring apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60111935A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195462A (en) * | 1986-02-19 | 1987-08-28 | Honda Motor Co Ltd | Ignition timing control device for internal combusion engine |
JPS63125147U (en) * | 1987-02-10 | 1988-08-16 | ||
JPH01262348A (en) * | 1988-04-13 | 1989-10-19 | Mitsubishi Electric Corp | Control device for internal combustion engine |
FR2862711A1 (en) * | 2003-11-24 | 2005-05-27 | Peugeot Citroen Automobiles Sa | Pressure acquisition chain calibrating system for motor vehicle, has determination unit calculating offset value with respect to reference pressure values and values of signals delivered by cylinder pressure sensor |
EP1574834A1 (en) * | 2004-03-12 | 2005-09-14 | HONDA MOTOR CO., Ltd. | An in-cylinder pressure detecting apparatus and method |
FR3011581A1 (en) * | 2013-10-08 | 2015-04-10 | Continental Automotive France | METHOD FOR COMPENSATING A SIGNAL OF A PRESSURE MEASURING DEVICE WITHIN AN INTERNAL COMBUSTION ENGINE |
-
1983
- 1983-11-24 JP JP21955683A patent/JPS60111935A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195462A (en) * | 1986-02-19 | 1987-08-28 | Honda Motor Co Ltd | Ignition timing control device for internal combusion engine |
JPH05549B2 (en) * | 1986-02-19 | 1993-01-06 | Honda Motor Co Ltd | |
JPS63125147U (en) * | 1987-02-10 | 1988-08-16 | ||
JPH01262348A (en) * | 1988-04-13 | 1989-10-19 | Mitsubishi Electric Corp | Control device for internal combustion engine |
FR2862711A1 (en) * | 2003-11-24 | 2005-05-27 | Peugeot Citroen Automobiles Sa | Pressure acquisition chain calibrating system for motor vehicle, has determination unit calculating offset value with respect to reference pressure values and values of signals delivered by cylinder pressure sensor |
EP1548418A1 (en) * | 2003-11-24 | 2005-06-29 | Peugeot Citroen Automobiles S.A. | Calibration system of the pressure measuring chain in a automotive vehicle Diesel engine cylinder |
EP1574834A1 (en) * | 2004-03-12 | 2005-09-14 | HONDA MOTOR CO., Ltd. | An in-cylinder pressure detecting apparatus and method |
US7117725B2 (en) | 2004-03-12 | 2006-10-10 | Honda Motor Co., Ltd. | In-cylinder pressure detecting apparatus |
EP1722212A1 (en) * | 2004-03-12 | 2006-11-15 | HONDA MOTOR CO., Ltd. | An in-cylinder pressure detecting apparatus and method |
CN100462540C (en) * | 2004-03-12 | 2009-02-18 | 本田技研工业株式会社 | An in-cylinder pressure detecting apparatus |
FR3011581A1 (en) * | 2013-10-08 | 2015-04-10 | Continental Automotive France | METHOD FOR COMPENSATING A SIGNAL OF A PRESSURE MEASURING DEVICE WITHIN AN INTERNAL COMBUSTION ENGINE |
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