Spark plug attachment structure and spark plug therefor
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0119716
(2002-04-11)
|
우선권정보 |
JP-0113632 (2001-04-12) |
발명자
/ 주소 |
- Suzuki, Akira
- Suzuki, Takahiro
- Kawamura, Kazumi
- Iwata, Kazuya
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
3 |
초록
▼
A spark plug has a central electrode, an insulator surrounding the central electrode and a metallic shell retaining therein the insulator and provided with no thread thereon. The spark plug is clearance fitted in a plug hole of a cylinder head, without being screwed into the plug hole, in such a man
A spark plug has a central electrode, an insulator surrounding the central electrode and a metallic shell retaining therein the insulator and provided with no thread thereon. The spark plug is clearance fitted in a plug hole of a cylinder head, without being screwed into the plug hole, in such a manner that a front end portion of the metallic shell is accommodated in a front end section of the plug hole with a clearance therebetween provided with a sealant so as to transmit heat from the spark plug to the cylinder head. The clearance is preferably given by the following expression: 0.005≤D-d1≤0.05, where D is an inner diameter (mm) of the front end section and d1 is an outer diameter (mm) of the front end portion. By this, the spark plug can be easily attached to the cylinder head and attain improved heat resistance.
대표청구항
▼
A spark plug has a central electrode, an insulator surrounding the central electrode and a metallic shell retaining therein the insulator and provided with no thread thereon. The spark plug is clearance fitted in a plug hole of a cylinder head, without being screwed into the plug hole, in such a man
A spark plug has a central electrode, an insulator surrounding the central electrode and a metallic shell retaining therein the insulator and provided with no thread thereon. The spark plug is clearance fitted in a plug hole of a cylinder head, without being screwed into the plug hole, in such a manner that a front end portion of the metallic shell is accommodated in a front end section of the plug hole with a clearance therebetween provided with a sealant so as to transmit heat from the spark plug to the cylinder head. The clearance is preferably given by the following expression: 0.005≤D-d1≤0.05, where D is an inner diameter (mm) of the front end section and d1 is an outer diameter (mm) of the front end portion. By this, the spark plug can be easily attached to the cylinder head and attain improved heat resistance. rein each of the first and second strips generates electric charges in a quantity corresponding to pressure applied when a respective one of each of the first and second strips is touched and outputs touch signals having levels corresponding to the quantity of the electric charges; and a first direction detecting portion configured to detect a component of a moving direction of the pointer an order in which the touch signals are generated. 2. The apparatus of claim 1, wherein each of the first and second strips is a piezoelectric film formed of polyvinylidene fluoride (PVDF). 3. The apparatus of claim 1, further comprising: a signal converting portion for converting the touch signals generated from the first strips into first square waves, outputting the square waves as first information signals, converting the touch signals generated from the second strips into second square waves, and outputting the second square waves as second information signals; said first direction detecting portion for checking the order in which the first information signals are generated, and detecting the component of the first direction of the moving direction from the checked order; and a second direction detecting portion for checking an order in which the second information signals are generated and, detecting a component of the second direction of the moving direction from the checked order; and wherein the moving direction corresponds to the pointing information. 4. The apparatus method of claim 3, further comprising: a first movement amount detecting portion for measuring the number of times in which the first information signals are generated in each predetermined time period, and outputting the number of times as the amounts of movement of the first direction; and a second movement amount detecting portion for measuring the number of times in which the second information signals are generated in each predetermined time period, and outputting the number of times as the amount of movement of the second direction, wherein the amount of movement corresponds to the pointing information. 5. The apparatus of claim 4, further comprising a radio frequency signal converting portion for converting the moving direction and the amount of movement, which are input from the first and second direction detecting portions and from the first and second movement amount detecting portions, respectively, into a radio frequency signal, and outputting the radio frequency signal. 6. The apparatus of claim 4, wherein the signal converting portion comprises: a first comparing part for comparing each of levels of the touch signals generated from the first strips with a reference voltage and outputting the results of comparison as the first information signals; and a second comparing part for comparing each of levels of the touch signals generated from the second strips with the reference voltage and outputting the results of comparison as the second information signals. 7. The apparatus of claim 4, wherein the first direction detecting portion comprises: a first order storing part for storing the order in which the first information signals are generated when the first strips are touched in the first direction or the reverse direction of the first direction; and a third comparing part for comparing the order in which the first information signals are presently generated, with the order in which the first information signals were previously generated and which are read from the first order storing part, and detecting the component of the first direction of the moving direction from the result of comparison. 8. The apparatus of claim 4, wherein the second direction detecting portion comprises: a second order storing part for storing the order in which the second information signals are generated when the second strips are touched in the second direction or the reverse direction of the second direction; and a fourth comparing part for com
이 특허에 인용된 특허 (3)
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Car Martin (Grossenhausen DEX) Phlmann Erich (Kulmbach DEX), Ignition system and spark plug for multiple ignition in an internal combustion engine.
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Below Matthew B. (Findlay OH), Shield for aligning a ground electrode of a spark plug in a cylinder head.
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Runge Friedrich (143 Old Main Road Pinetown 3600 ZAX), Spark plug for an internal combustion engine.
이 특허를 인용한 특허 (5)
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Lykowski, James D; Hampton, Keith, Flexible ignitor assembly for air/fuel mixture and method of construction thereof.
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Lykowski, James D; Hampton, Keith, Flexible ignitor assembly for air/fuel mixture and method of construction thereof.
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Bumen,Werner, Ignition coil tester.
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Lykowski, James; Hampton, Keith; Burrows, John, Ignitor for air/fuel mixture and engine therewith and method of assembly thereof into a cylinder head.
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Matsubara, Yoshihiro, Spark plug having resistance against smoldering, long lifetime, and excellent ignitability.
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