US20050193808A1 - Cam shaft intake angle examining device - Google Patents
Cam shaft intake angle examining device Download PDFInfo
- Publication number
- US20050193808A1 US20050193808A1 US10/793,917 US79391704A US2005193808A1 US 20050193808 A1 US20050193808 A1 US 20050193808A1 US 79391704 A US79391704 A US 79391704A US 2005193808 A1 US2005193808 A1 US 2005193808A1
- Authority
- US
- United States
- Prior art keywords
- cam shaft
- engine
- examining device
- base
- adjusting rod
- 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
Links
Images
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
- F02B75/00—Other engines
- F02B75/34—Ultra-small engines, e.g. for driving models
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
Definitions
- the present invention relates to a cam shaft intake angle examining device, and more particularly to a diesel engine cam shaft intake angle examining device such that the intake stroke is able to precisely coordinate with different strokes of the engine.
- An engine provides power to vehicle, vessels and aircraft so that all these different transporting bodies are able to move.
- some are gasoline engines and the other diesel engines.
- some engines are four-stroke engines and some two-stroke engines.
- the four strokes of the engine are intake, compression, explosion and exhaust.
- the intake and exhaust occur at the same time to the diesel engine. Therefore, observation of the activation/deactivation of the intake and the traveling distance of the piston is able to have the intake angle after calculation.
- the current calculation technique is too troublesome and wastes too much time.
- the current technique requires the user to rotate the cam shaft first. Since the rotation of the cam shaft drives the piston, observation of the activation/deactivation of the intake angle and measurement of the piston traveling distance is able to have the intake angle. As stated earlier, this technique takes too much time and involves a lot of manual energy.
- the present invention intends to provide an improved examining device to mitigate the aforementioned problems.
- the primary objective of the invention is to provide an improved cam shaft intake angle examining device to fast measure the intake angle so as to save time and manual energy.
- Another objective of the invention is that during the measurement of the intake angle, observation of the piston movement is able to fix the intake angle to coordinate with the cam shaft rotation.
- FIG. 1 is a schematic perspective view showing an examining device of the present invention in corporation with an engine in question;
- FIG. 2 is an exploded perspective view showing the structure of the examining device of the present invention
- FIG. 3 is a top plan view of the examining device of the present invention.
- FIG. 4 is a front plan view of the examining device of the present invention.
- FIG. 5 is a schematic top plan view showing the application of the examining device.
- FIG. 6 is a schematic front plan view showing the application of the examining device of the present invention.
- a cam shaft intake angle examining device in accordance with the present invention includes a base 1 , a measuring disk 2 , and an adjusting rod 3 .
- the engine 4 with a cam shaft 41 to be tested is a two-stroke diesel engine.
- the engine 4 is first secured in the base 1 .
- the adjusting rod 3 is used to position the cam shaft 41 at an initial position ( 0 point).
- a connecting block 22 is placed on the cam shaft 41 .
- a rotation disk 21 is measured and fixed on the connecting block 22 . After the adjusting rod 3 is taken away from the base 1 , the engine 4 is ready for test.
- the base 1 is defined with a fixing recess 12 .
- the fixing recess 12 is so defined that it is adapted to mate with the shape of the cam shaft 41 .
- the base 1 further has a ring 11 with scales that has a prevision of 0.1 degrees.
- a fixing hole 111 is defined in the ring 11 and a connecting hole 112 is defined in a bottom defining the fixing hole 111 to communicate with the connecting hole 112 .
- a positioning device is provided in the base 1 to fix the engine 4 .
- the positioning device is a combination of a pressing block and a bolt 13 .
- the pressing block 13 is applied to abut an outer appearance of the engine 4 and then the bolt is supplied to extend through the pressing block and into the base 1 so that the engine 4 to be tested is fixed on the base 1 .
- the measuring disk 2 includes a rotation disk 21 and a connecting block 22 .
- the rotation disk 21 has a cam shaft hole 211 to correspond to the cam shaft 41 .
- a marking cross 212 is formed on a top face of the rotation disk 21 to coordinate with the scales of the ring 11 .
- a rotation handle 213 is formed on the rotation disk 21 to facilitate the rotation of the rotation disk 21 .
- the connecting block 22 has a rough surface 220 to increase the friction with the rotation disk 21 such that relative movement between the connecting block 22 and the rotation disk 21 is prevented.
- the connecting block 22 has a cam shaft fixing ring to adapt to the shape of the engine cam shaft 41 .
- a cam shaft extension hole 221 is defined in the connecting block 22 .
- a circular recess is defined in both sides of the connecting block 22 to mate with the output end 412 of the cam shaft 41 .
- the adjusting rod 3 is provided to ensure that the tested engine is at the initial position before the test begins.
- the initial position is the same as the top dead point of the piston.
- the adjusting rod 3 is a rod with different diameters.
- the adjusting rod 3 has a first end 31 with a diameter the same as that of the piston of the engine 4 in question.
- the first end 31 has a recess 311 corresponding to the linkage pin.
- a contacting face 312 is formed adjacent to the recess 311 .
- a second end 32 is formed opposite to the first end 31 for easy holding of the adjusting rod 3 .
- the hull of the engine 4 is to be used so that only the hull and the cam shaft 41 of the engine 4 are left for test.
- the bolt of the positioning device is used to extend through the pressing block 13 to secure the engine 4 in the fixing recess 12 of the base 1 .
- the output end 412 of the cam shaft 41 extends through the cam shaft extension hole 221 of the connecting block 22 with the rough surface 220 facing upward.
- the output end 412 of the cam shaft 41 is then extended through the cam shaft hole 211 of the rotation disk 21 .
- Rotation of the cam shaft 41 allows the linkage pin 44 at a position the same as the top dead end of the piston.
- the adjusting rod 3 is extended into the cylinder 42 of the engine 4 to allow the linkage pin 44 to be received in the recess 311 .
- the linkage pin 44 engages with the contacting face 312 .
- An intake 411 may be seen from the fuel entrance 43 of the engine.
Abstract
An intake angle examining device for an engine cam shaft includes a base adapted for receiving the engine, a measuring disk pivotally connected to the base for allowing the cam shaft to extend therethrough and an adjusting rod extendable into a cylinder of the engine to secure the cam shaft. The engine to be tested is secured in the base and the cam shaft is extended through and secured in the rotation disk. The adjusting rod is extended into the cylinder to fix the cam shaft and is removed when the engine is tested.
Description
- 1. Field of the Invention
- The present invention relates to a cam shaft intake angle examining device, and more particularly to a diesel engine cam shaft intake angle examining device such that the intake stroke is able to precisely coordinate with different strokes of the engine.
- 2. Description of Related Art
- An engine provides power to vehicle, vessels and aircraft so that all these different transporting bodies are able to move. Based on the fuel consumed, some are gasoline engines and the other diesel engines. Based on the number of strokes each cycle, some engines are four-stroke engines and some two-stroke engines. As is generally known, the four strokes of the engine are intake, compression, explosion and exhaust. Thus, it is to be noted that the intake and exhaust occur at the same time to the diesel engine. Therefore, observation of the activation/deactivation of the intake and the traveling distance of the piston is able to have the intake angle after calculation. However, the current calculation technique is too troublesome and wastes too much time.
- The current technique requires the user to rotate the cam shaft first. Since the rotation of the cam shaft drives the piston, observation of the activation/deactivation of the intake angle and measurement of the piston traveling distance is able to have the intake angle. As stated earlier, this technique takes too much time and involves a lot of manual energy.
- To overcome the shortcomings, the present invention intends to provide an improved examining device to mitigate the aforementioned problems.
- The primary objective of the invention is to provide an improved cam shaft intake angle examining device to fast measure the intake angle so as to save time and manual energy.
- Another objective of the invention is that during the measurement of the intake angle, observation of the piston movement is able to fix the intake angle to coordinate with the cam shaft rotation.
- Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIG. 1 is a schematic perspective view showing an examining device of the present invention in corporation with an engine in question; -
FIG. 2 is an exploded perspective view showing the structure of the examining device of the present invention; -
FIG. 3 is a top plan view of the examining device of the present invention; -
FIG. 4 is a front plan view of the examining device of the present invention; -
FIG. 5 is a schematic top plan view showing the application of the examining device; and -
FIG. 6 is a schematic front plan view showing the application of the examining device of the present invention. - With reference to
FIGS. 1 and 2 , a cam shaft intake angle examining device in accordance with the present invention includes abase 1, ameasuring disk 2, and anadjusting rod 3. Theengine 4 with acam shaft 41 to be tested is a two-stroke diesel engine. Theengine 4 is first secured in thebase 1. The adjustingrod 3 is used to position thecam shaft 41 at an initial position (0 point). A connectingblock 22 is placed on thecam shaft 41. Arotation disk 21 is measured and fixed on the connectingblock 22. After the adjustingrod 3 is taken away from thebase 1, theengine 4 is ready for test. - The
base 1 is defined with afixing recess 12. Thefixing recess 12 is so defined that it is adapted to mate with the shape of thecam shaft 41. Thebase 1 further has aring 11 with scales that has a prevision of 0.1 degrees. A fixing hole 111 is defined in thering 11 and a connectinghole 112 is defined in a bottom defining the fixing hole 111 to communicate with the connectinghole 112. A positioning device is provided in thebase 1 to fix theengine 4. In this embodiment, the positioning device is a combination of a pressing block and abolt 13. Thepressing block 13 is applied to abut an outer appearance of theengine 4 and then the bolt is supplied to extend through the pressing block and into thebase 1 so that theengine 4 to be tested is fixed on thebase 1. - The
measuring disk 2 includes arotation disk 21 and a connectingblock 22. Therotation disk 21 has acam shaft hole 211 to correspond to thecam shaft 41. A markingcross 212 is formed on a top face of therotation disk 21 to coordinate with the scales of thering 11. Arotation handle 213 is formed on therotation disk 21 to facilitate the rotation of therotation disk 21. - The connecting
block 22 has arough surface 220 to increase the friction with therotation disk 21 such that relative movement between the connectingblock 22 and therotation disk 21 is prevented. The connectingblock 22 has a cam shaft fixing ring to adapt to the shape of theengine cam shaft 41. A camshaft extension hole 221 is defined in the connectingblock 22. A circular recess is defined in both sides of the connectingblock 22 to mate with theoutput end 412 of thecam shaft 41. - The adjusting
rod 3 is provided to ensure that the tested engine is at the initial position before the test begins. In this embodiment, the initial position is the same as the top dead point of the piston. The adjustingrod 3 is a rod with different diameters. The adjustingrod 3 has afirst end 31 with a diameter the same as that of the piston of theengine 4 in question. Thefirst end 31 has arecess 311 corresponding to the linkage pin. A contactingface 312 is formed adjacent to therecess 311. Asecond end 32 is formed opposite to thefirst end 31 for easy holding of the adjustingrod 3. - Before the test starts, it is to be noted that the hull of the
engine 4 is to be used so that only the hull and thecam shaft 41 of theengine 4 are left for test. With reference toFIGS. 3 and 4 , first, theengine 4 is placed in thefixing recess 12 of thebase 1 and then the bolt of the positioning device is used to extend through thepressing block 13 to secure theengine 4 in thefixing recess 12 of thebase 1. Theoutput end 412 of thecam shaft 41 extends through the camshaft extension hole 221 of the connectingblock 22 with therough surface 220 facing upward. Theoutput end 412 of thecam shaft 41 is then extended through thecam shaft hole 211 of therotation disk 21. Rotation of thecam shaft 41 allows thelinkage pin 44 at a position the same as the top dead end of the piston. The adjustingrod 3 is extended into thecylinder 42 of theengine 4 to allow thelinkage pin 44 to be received in therecess 311. Meantime, thelinkage pin 44 engages with the contactingface 312. Anintake 411 may be seen from thefuel entrance 43 of the engine. - Adjusting the
rotation disk 21 to allow themarking cross 212 aligned with the ring scale initial point. Then a nut (not numbered) is supplied to secure theoutput end 412 and thus the connectingblock 22 is secured on therotation disk 21. Therefore, thecam shaft 41, the connectingblock 22 and therotation disk 21 are able to move simultaneously. With reference toFIGS. 5 and 6 , after the adjustingrod 3 is removed, therotation disk 21 is rotated using therotation handle 213. Thefuel entrance 43 is used as a standard of measuring thecam shaft intake 411. Using therotation disk 21 and the scale of thering 11 is able to readily measure the intake angle. - Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (10)
1. An intake angle examining device for an engine cam shaft, the intake angle examining device comprising:
a base adapted for receiving the engine;
a measuring disk pivotally connected to the base for allowing the cam shaft to extend therethrough; and
an adjusting rod extendable into a cylinder of the engine to secure the cam shaft,
whereby the engine to be tested is secured in the base and the cam shaft is extended through and secured in the rotation disk, the adjusting rod is extended into the cylinder to fix the cam shaft and is removed when the engine is tested.
2. The examining device as claimed in claim 1 , wherein the base has a ring.
3. The examining device as claimed in claim 1 , wherein the base has a fixing recess.
4. The examining device as claimed in claim 1 , wherein the base has a positioning device for fixing the engine.
5. The examining device as claimed in claim 4 , wherein the positioning device is a combination of a pressing block and a bolt.
6. The examining device as claimed in claim 1 , wherein the measuring disk includes a rotation disk and a connecting block.
7. The examining device as claimed in claim 6 , wherein a marking cross is defined in a top face of the measuring disk.
8. The examining device as claimed in claim 6 , wherein the measuring disk has a rotation handle.
9. The examining device as claimed in claim 6 , wherein the connecting block has a rough surface on a side face of the connecting block.
10. The examining device as claimed in claim 1 , wherein the adjusting rod has a recess adapted to correspond to a linkage pin of the engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/793,917 US6948357B1 (en) | 2004-03-08 | 2004-03-08 | Cam shaft intake angle examining device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/793,917 US6948357B1 (en) | 2004-03-08 | 2004-03-08 | Cam shaft intake angle examining device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050193808A1 true US20050193808A1 (en) | 2005-09-08 |
US6948357B1 US6948357B1 (en) | 2005-09-27 |
Family
ID=34912139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/793,917 Expired - Fee Related US6948357B1 (en) | 2004-03-08 | 2004-03-08 | Cam shaft intake angle examining device |
Country Status (1)
Country | Link |
---|---|
US (1) | US6948357B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103075222A (en) * | 2012-12-30 | 2013-05-01 | 洛阳北方企业集团有限公司 | Valve timing adjusting device for engine and use method thereof |
WO2018014202A1 (en) * | 2016-07-19 | 2018-01-25 | 乐矣天 | Valve rocker arm assembly of novel valve mechanism |
CN112414352A (en) * | 2020-11-10 | 2021-02-26 | 重庆市计量质量检测研究院 | Method for correcting sampling pose and measuring profile shape of measured object on camshaft |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5715780A (en) * | 1996-10-21 | 1998-02-10 | General Motors Corporation | Cam phaser position detection |
US5827954A (en) * | 1997-05-15 | 1998-10-27 | Noland; E. Bruce | Camshaft degreeing platform |
US6035707A (en) * | 1996-12-19 | 2000-03-14 | Main; Scott | Camshaft bench tester |
US6041647A (en) * | 1996-05-28 | 2000-03-28 | Toyota Jidosha Kabushiki Kaisha | Crank angle detecting apparatus for internal combustion engine |
US6272910B1 (en) * | 1997-05-15 | 2001-08-14 | E. Bruce Noland | Camshaft degreeing platform |
US6324902B1 (en) * | 1998-06-16 | 2001-12-04 | Hyundai Motor Company | Apparatus and method for inspecting phase angle error of camshaft for an internal combustion engine |
US6612162B2 (en) * | 2000-11-29 | 2003-09-02 | Delphi Technologies, Inc. | Method of determining cam phase angle |
US20040074289A1 (en) * | 2002-06-24 | 2004-04-22 | Siemens Aktiengesellschaft | Method and device for determining the initial angle position of an internal combustion engine |
-
2004
- 2004-03-08 US US10/793,917 patent/US6948357B1/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6041647A (en) * | 1996-05-28 | 2000-03-28 | Toyota Jidosha Kabushiki Kaisha | Crank angle detecting apparatus for internal combustion engine |
US5715780A (en) * | 1996-10-21 | 1998-02-10 | General Motors Corporation | Cam phaser position detection |
US6035707A (en) * | 1996-12-19 | 2000-03-14 | Main; Scott | Camshaft bench tester |
US5827954A (en) * | 1997-05-15 | 1998-10-27 | Noland; E. Bruce | Camshaft degreeing platform |
US6272910B1 (en) * | 1997-05-15 | 2001-08-14 | E. Bruce Noland | Camshaft degreeing platform |
US6324902B1 (en) * | 1998-06-16 | 2001-12-04 | Hyundai Motor Company | Apparatus and method for inspecting phase angle error of camshaft for an internal combustion engine |
US6612162B2 (en) * | 2000-11-29 | 2003-09-02 | Delphi Technologies, Inc. | Method of determining cam phase angle |
US20040074289A1 (en) * | 2002-06-24 | 2004-04-22 | Siemens Aktiengesellschaft | Method and device for determining the initial angle position of an internal combustion engine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103075222A (en) * | 2012-12-30 | 2013-05-01 | 洛阳北方企业集团有限公司 | Valve timing adjusting device for engine and use method thereof |
WO2018014202A1 (en) * | 2016-07-19 | 2018-01-25 | 乐矣天 | Valve rocker arm assembly of novel valve mechanism |
CN112414352A (en) * | 2020-11-10 | 2021-02-26 | 重庆市计量质量检测研究院 | Method for correcting sampling pose and measuring profile shape of measured object on camshaft |
Also Published As
Publication number | Publication date |
---|---|
US6948357B1 (en) | 2005-09-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Maurya et al. | Reciprocating engine combustion diagnostics | |
Hamada et al. | An experimental study for performance and emissions of a small four-stroke SI engine for modern motorcycle | |
JP2009275618A (en) | Angular velocity and angular acceleration calculation device, torque estimation device, and combustion state estimation device | |
CN108036699B (en) | Measuring system for continuously variable valve lift and valve timing | |
CN204286801U (en) | Gas distribution phase of engine measurement mechanism | |
US5459940A (en) | Apparatus and process for determining top dead center of a piston and crank shaft in an internal combustion engine | |
CN102095392A (en) | Camshaft measurement machine for dynamically measuring specific parameter of camshaft | |
CN107667212A (en) | For characterizing the detonation sensor network system and method for noise | |
US6948357B1 (en) | Cam shaft intake angle examining device | |
CN101893418A (en) | Gauge structure for testing convex and concave spherical surfaces complying with contact requirement | |
CN102539064B (en) | Diesel engine indicator diagram measuring method | |
CN107084656A (en) | A kind of engine offset piston protrusion measuring device | |
CN208595993U (en) | The on-line measuring device of the real-time torque of engine under a kind of whole vehicle state | |
US6595043B2 (en) | Pressure measurement system | |
Ferraro et al. | Knock-limit measurement in high-speed SI engines | |
CN210036541U (en) | Quick detection device of automobile engine valve spring | |
CN212692732U (en) | Utensil is examined to quick car cylinder cap rough machining camshaft degree of depth | |
KR101927785B1 (en) | Method for collecting 1 cycle data for output measurement and combustion analysis of large-sized low-speed 4 stroke engine | |
Savioli et al. | Development of a 2-stroke GDI engine | |
Zeng et al. | Reconstructing cylinder pressure of a spark-ignition engine for heat transfer and heat release analyses | |
KR101927786B1 (en) | Method for collecting 1 cycle data for output measurement and combustion analysis of large-sized low-speed 4 stroke engine | |
CN220039339U (en) | Online quick-measuring type cylinder cover valve annulus depth detection device | |
CN201688946U (en) | Detecting clamp for valve of engine cylinder cover | |
TWI237091B (en) | Intake angle detector for engine crankshaft | |
CN217585634U (en) | Handheld cylinder cover valve seat ring coaxiality rapid detection measuring tool with guiding and positioning keys |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.) |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20170927 |