DRIVE-BY-WIRE THROTTLE CONTROL APPARATUS AND METHOD OF FORMING THE SAME

• US 20100043589A1
• Filed: 08/20/2008
• Published: 02/25/2010
• Est. Priority Date: 08/20/2008
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Chandran, Anand, Cable, Al
• Application Number:
  US12/194,760
• Publication Number:
  US 20100043589A1
• Time in Patent Office: Days
• US Class Current: 74/504
• CPC Class Codes: B62K 11/14 Handlebar constructions, or arrangements of controls thereon, specially adapted thereto hand controls per se B62K23/02
• CPC Class Codes: B62K 23/06 Levers
• CPC Class Codes: F02D 11/02 characterised by hand, foot, or like operator controlled initiation means
• CPC Class Codes: F02D 11/105 characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque
• CPC Class Codes: F02D 11/106 Detection of demand or actuation
• CPC Class Codes: F02D 2009/0213 Electronic or electric governor
• CPC Class Codes: F02D 2009/0294 Throttle control device with provisions for actuating electric or electronic sensors
• CPC Class Codes: G01B 7/14 for measuring distance or clearance between spaced objects or spaced apertures G01B7/30 takes precedence
• CPC Class Codes: G01B 7/30 for measuring angles or tapers; for testing the alignment of axes
• CPC Class Codes: G01R 33/06 using galvano-magnetic devices
• CPC Class Codes: H10N 52/00 Hall-effect devices integrated devices or assemblies of multiple devices H10N59/00
• CPC Class Codes: Y10T 74/20474 Rotatable rod, shaft, or post

Abstract

A drive-by-wire throttle control apparatus and method of forming the same. The apparatus includes a Hall-effect magnetic sensor. A thumb lever can be assembled into a mounting bracket inside a cylindrical hole, which can rotate to a desired angle. The thumb lever can be mechanically connected to a magnet holder, which includes a magnet, utilizing a key-slot mechanism. The magnet holder can be placed inside a housing that allows the magnet holder to rotate and restrict other movements. When the thumb lever rotates, the lever rotates the magnet holder, which in turn detects the position of the throttle utilizing a varying voltage output from an associated Hall-effect chip. A signal can be generated based on the sensed position.

Claims

1. A throttle control apparatus, comprising:

a magnet holder comprising a position sensing magnet;

a thumb lever connected to a mounting bracket within a cylindrical hole formed from said mounting bracket, wherein said thumb lever is mechanically connected to said magnet holder, wherein said magnet holder is located within a housing that permits said magnet holder to rotate and thereby restrict the movement of other components; and

a magnetic position sensor in magnetic communication with said position sensing magnet and in contactless association with said thumb lever, wherein said magnetic holder rotates as said thumb lever rotates in order to thereby detect a position of said thumb lever on a handle bar utilizing a varying voltage output from said magnetic position sensor.

2. The apparatus of claim 1 further comprising:

an electronic control unit associated with said magnetic position sensor in order to generate a signal in a form of said varying voltage, based on a sensed position in order to control a throttle of a vehicle and thereby eliminate a need for throttle cables.

3. The apparatus of claim 1 wherein said thumb lever is connected to said magnet holder utilizing a key-slot mechanism.

4. The apparatus of claim 1 wherein said position sensing magnet is magnetized diagonally.

5. The apparatus of claim 1 wherein said position sensing magnet is placed inside said magnet housing via a bonder and filled with an epoxy.

6. The apparatus of claim 1 wherein said magnetic position sensor and said position sensing magnet are maintained at a constant distance across a variety of operating and environmental conditions.

7. The apparatus of claim 1 wherein said magnetic position sensor comprises a Hall-effect sensor.

8. A throttle control apparatus, comprising:

a magnet holder comprising a position sensing magnet;

a thumb lever connected to a mounting bracket within a cylindrical hole formed from said mounting bracket, wherein said thumb lever is mechanically connected to said magnet holder, wherein said magnet holder is located within a housing that permits said magnet holder to rotate and thereby restrict the movement of other components;

a magnetic position sensor in magnetic communication with said position sensing magnet and in contactless association with said thumb lever, wherein said magnetic holder rotates as said thumb lever rotates in order to thereby detect a position of said thumb lever on a handle bar utilizing a varying voltage output from said magnetic position sensor; and

an electronic control unit associated with said magnetic position sensor in order to generate a signal in a form of said varying voltage, based on a sensed position in order to control a throttle thereby eliminate a need for throttle cables.

9. The apparatus of claim 8 wherein said thumb lever is connected to said magnet holder utilizing a key-slot mechanism.

10. The apparatus of claim 8 wherein said position sensing magnet is magnetized diagonally.

11. The apparatus of claim 8 wherein said position sensing magnet is placed inside said magnet housing via a bonder and filled with an epoxy.

12. The apparatus of claim 8 wherein said magnetic position sensor and said position sensing magnet are maintained at a constant distance across a variety of operating and environmental conditions.

13. The apparatus of claim 8 wherein said magnetic position sensor comprises a Hall-effect sensor.

14. A throttle control method, comprising:

configuring a magnet holder to include a position sensing magnet;

connecting a thumb lever to a mounting bracket within a cylindrical hole formed from said mounting bracket, wherein said thumb lever is mechanically connected to said magnet holder;

locating said magnet holder within a housing that permits said magnet holder to rotate and thereby restrict the movement of other components; and

permitting a magnetic position sensor to magnetically communicate with said position sensing magnet and in contactless association with said thumb lever, wherein said magnetic holder rotates as said thumb lever rotates in order to thereby detect a position of said thumb lever on a handle bar utilizing a varying voltage output from said magnetic position sensor.

15. The method of claim 14 further comprising associating an electronic control unit with said magnetic position sensor in order to generate a signal in a form of said varying voltage, based on a sensed position in order to control a throttle of a vehicle and thereby eliminate a need for throttle cables.

16. The method of claim 14 connecting said thumb lever to said magnet holder utilizing a key-slot mechanism.

17. The method of claim 14 further comprising diagonally magnetizing said position sensing magnet.

18. The method of claim 14 further comprising placing said position sensing magnet inside said magnet housing via a bonder and filled with an epoxy.

19. The method of claim 14 further comprising maintaining said magnetic position sensor and said position sensing magnet at a constant distance across a variety of operating and environmental conditions.

20. The method of claim 14 further comprising configuring said magnetic position sensor to comprise a Hall-effect sensor.