CA2618517A1 - Exhaust gas sensor installation structure for four-cycle engine - Google Patents

Exhaust gas sensor installation structure for four-cycle engine Download PDF

Info

Publication number
CA2618517A1
CA2618517A1 CA002618517A CA2618517A CA2618517A1 CA 2618517 A1 CA2618517 A1 CA 2618517A1 CA 002618517 A CA002618517 A CA 002618517A CA 2618517 A CA2618517 A CA 2618517A CA 2618517 A1 CA2618517 A1 CA 2618517A1
Authority
CA
Canada
Prior art keywords
sensor
exhaust gas
gas sensor
cylinder head
installation structure
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.)
Granted
Application number
CA002618517A
Other languages
French (fr)
Other versions
CA2618517C (en
Inventor
Koji Okamoto
Yohei Yamauchi
Chikashi Takiguchi
Takeshi Kanae
Katsuya Abe
Mamoru Otsubo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of CA2618517A1 publication Critical patent/CA2618517A1/en
Application granted granted Critical
Publication of CA2618517C publication Critical patent/CA2618517C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
    • F02B77/086—Sensor arrangements in the exhaust, e.g. for temperature, misfire, air/fuel ratio, oxygen sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust Silencers (AREA)

Abstract

Providing an exhaust gas sensor installation structure for a four-cycle engine, in which an exhaust gas sensor is installed in a cylinder head of an engine main body, the exhaust gas sensor including a sensor main part an end portion of which is exposed in an exhaust port and a cap which is fitted to a rear portion of the sensor main part and from a side of which a cord extends, the exhaust gas sensor installation structure being such that, when the exhaust gas sensor is installed in the cylinder head, the direction in which the cord extends from the exhaust gas sensor is fixedly defined to make handling of the cord easy. A sensor installation hole for installing a sensor main part is provided in a portion around an exhaust port of a cylinder head, a cap is at least partly covered by a sensor guard fixedly positioned relative to the cylinder head, and a direction in which a cord extends is fixedly defined by the sensor guard relative to the cylinder head.

Claims (6)

1. An exhaust gas sensor installation structure for a four-cycle engine, in which an exhaust gas sensor (28) is installed in a cylinder head (19A, 19B, 19C) of an engine main body (16A, 16B, 16C), the exhaust gas sensor (28) comprising a sensor main part (31) an end portion of which is exposed in an exhaust port (23) and a cap (32) which is fitted to a rear portion of the sensor main part (31) and from a side of which a cord (35) extends; wherein: a sensor installation hole (29) for installing the sensor main part (31) is provided in a portion around the exhaust port (23) of the cylinder head (19A, 19B, 19C); the cap (32) is at least partly covered by a sensor guard (40, 44, 45) fixedly positioned relative to the cylinder head (19A, 19B, 19C); and a direction in which the cord (35) extends is fixedly defined by the sensor guard (40, 44, 45) relative to the cylinder head (19A, 19B, 19C).
2. The exhaust gas sensor installation structure for a four-cycle engine according to Claim 1, wherein the sensor guard (40) formed discretely from the engine main body (16A) is attached to the exhaust gas sensor (28) such that the sensor guard (40) engages with a positioning part (41) provided on the engine main body (16A).
3. The exhaust gas sensor installation structure for a four-cycle engine according to Claim 2, wherein: the sensor guard (40) integrally includes a sensor positioning part (40a) having an engaging part (40ad) to engage with the positioning part (41) provided on the engine main body and covering the cap (32); a cover part (40b) formed continuously with the sensor positioning part (40a) such that the cover part (40b) covers an outer open end of an air passage (34) communicating with an interior of the sensor main part (31) and opening in an outer surface of the cap (32); and a cord positioning part (40c) formed continuously with the sensor positioning part (40a) such that the cord positioning part (40c) defines a direction in which the cord (35) extends.
4. The exhaust gas sensor installation structure for a four-cycle engine according to one of Claims 2 and 3, wherein the positioning part (41) provided on the engine main body comprises two adjacent ones of a plurality of cooling fins (42) projectedly formed on an outer circumference of the cylinder head (19A).
5. The exhaust gas sensor installation structure for a four-cycle engine according to Claim 1, wherein the sensor guard (44, 45) is formed integrally with a head cover (20B) or the cylinder head (19C) included in the engine main body (16B, 16C).
6. The exhaust gas sensor installation structure for a four-cycle engine according to one of Claims 1 to 5, wherein: the engine main body (16A, 16B, 16C) is mounted on a motorcycle such that a side where the exhaust port (23) is provided of the cylinder head (19A, 19B, 19C) faces forward; and the sensor guard (40, 44, 45) is formed to cover the cap (32) from a front side.
CA2618517A 2007-03-15 2008-01-24 Exhaust gas sensor installation structure for four-cycle engine Expired - Fee Related CA2618517C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-067046 2007-03-15
JP2007067046A JP4909136B2 (en) 2007-03-15 2007-03-15 4-cycle engine exhaust gas sensor mounting structure

Publications (2)

Publication Number Publication Date
CA2618517A1 true CA2618517A1 (en) 2008-09-15
CA2618517C CA2618517C (en) 2012-04-17

Family

ID=39764631

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2618517A Expired - Fee Related CA2618517C (en) 2007-03-15 2008-01-24 Exhaust gas sensor installation structure for four-cycle engine

Country Status (5)

Country Link
JP (1) JP4909136B2 (en)
AU (1) AU2008201204B2 (en)
CA (1) CA2618517C (en)
FR (1) FR2915513B1 (en)
IT (1) ITTO20080080A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011064193A (en) * 2009-08-21 2011-03-31 Yamaha Motor Co Ltd Engine and saddle type vehicle equipped therewith
GB2545205A (en) * 2015-12-08 2017-06-14 Gm Global Tech Operations Llc Exhaust sensor for internal combustion engines
CN110462195B (en) * 2017-03-27 2021-05-25 本田技研工业株式会社 Internal combustion engine for saddle-ride type vehicle
JP7016596B2 (en) * 2020-03-17 2022-02-07 ダイハツ工業株式会社 Support bracket

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3750827B2 (en) * 1996-05-23 2006-03-01 ヤマハマリン株式会社 Air / fuel ratio sensor mounting apparatus for internal combustion engine
JPH09317516A (en) * 1996-05-30 1997-12-09 Suzuki Motor Corp Mounting device for pressure sensor
JPH11200913A (en) * 1998-01-13 1999-07-27 Honda Motor Co Ltd Arrangement structure for exhaust gas sensor of internal combustion engine
JP4287683B2 (en) * 2003-03-25 2009-07-01 本田技研工業株式会社 Internal combustion engine
JP2006162597A (en) * 2004-11-15 2006-06-22 Ngk Spark Plug Co Ltd Gas sensor unit and sensor cap
JP4368298B2 (en) * 2004-12-27 2009-11-18 本田技研工業株式会社 engine

Also Published As

Publication number Publication date
FR2915513A1 (en) 2008-10-31
JP4909136B2 (en) 2012-04-04
AU2008201204B2 (en) 2010-02-25
ITTO20080080A1 (en) 2008-09-16
AU2008201204A1 (en) 2008-10-02
JP2008223728A (en) 2008-09-25
FR2915513B1 (en) 2017-10-13
CA2618517C (en) 2012-04-17

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MKLA Lapsed

Effective date: 20200124