Control and communication module for light-duty combustion engine

Patent metadata

Field	Value
Publication number	US-10954911-B2
Application number	US-201716342838-A
Country	US
Kind code	B2
Filing date	Oct 19, 2017
Priority date	Oct 19, 2016
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

—In at least some implementations, a control and communication system for a light-duty combustion engine includes a circuit card, an ignition circuit carried by the circuit card and configured to control an ignition timing of the engine, and a short range wireless communication circuit carried by the circuit card. The communication circuit may include a Bluetooth Low Energy antenna. The ignition circuit may include an ignition capacitor that when drained induces an ignition pulse adapted to fire a spark plug. The system may further include a microprocessor that is coupled to and controls the ignition and communication circuits, and/or a clocking circuit adapted to provide a clocking frequency associated with the timing of the ignition circuit and associated with the communication circuit via a short range wireless communication protocol. The clocking circuit may include a crystal oscillator.

First claim

What is claimed is:

1. A control and communication system for a light-duty combustion engine, comprising:
a circuit card;
an ignition circuit carried by the circuit card and configured to control an ignition timing of the engine, wherein the ignition circuit includes an ignition capacitor that when discharged induces an ignition pulse adapted to fire a spark plug, and the ignition circuit includes a switch that controls discharge of the ignition capacitor; and
a short range wireless communication circuit carried by the circuit card.

2. The system of claim 1 , wherein the communication circuit includes a Bluetooth Low Energy antenna.

3. The system of claim 1 , wherein the ignition circuit includes a transistor coupled to the switch, and the transistor is arranged so that when the transistor is actuated, the switch is placed in a conductive state to discharge the ignition capacitor.

4. The system of claim 1 , further comprising a microprocessor that is coupled to and controls the ignition and communication circuits wherein the microprocessor controls that state of the switch.

5. The system of claim 1 , further comprising a clocking circuit adapted to provide a clocking frequency associated with the timing of the ignition circuit and associated with the communication circuit via a short range wireless communication protocol.

6. The system of claim 5 wherein the clocking circuit includes a crystal oscillator.

7. The system of claim 2 wherein at least a portion of the antenna is within an inch of the ignition capacitor.

8. The system of claim 7 wherein the communication circuit includes multiple ground planes including one or more analog ground planes and one or more digital ground planes.

9. A control and communication system for a light-duty combustion engine, comprising:
at least one microprocessor;
a capacitive discharge ignition circuit communicated with the at least one microprocessor, wherein the at least one microprocessor controls an ignition timing of the engine and the ignition circuit provides energy used for ignition events; and
a short range wireless communication circuit communicated with the at least one microprocessor which controls operation of the communication circuit, and wherein the ignition circuit provides power to the communication circuit for operation of the communication circuit, and wherein the ignition circuit is located on a circuit board and the communication circuit is located on the same circuit board as the ignition circuit.

10. The system of claim 9 wherein the ignition circuit provides power for operation of the at least one microprocessor.

11. The system of claim 10 wherein the ignition circuit includes a power circuit that provides power to the at least one microprocessor and to the communication circuit and wherein the ignition circuit includes multiple coils in which an AC power signal is induced, and wherein the ignition circuit includes a charge capacitor that when discharged causes an ignition event, and wherein the charge capacitor is charged by one portion of the AC signal and the power circuit is charged by a different portion of the AC signal.

12. The system of claim 11 wherein said one portion is a positive portion of the AC signal and said different portion is a negative portion of the AC signal.

13. The system of claim 9 , wherein the communication circuit includes a Bluetooth Low Energy antenna.

14. The system of claim 9 , wherein the ignition circuit includes an ignition capacitor that when drained induces an ignition pulse adapted to fire a spark plug.

15. The system of claim 9 , further comprising a clocking circuit adapted to provide a clocking frequency associated with the timing of the ignition circuit and associated with the communication circuit via a short range wireless communication protocol.

16. The system of claim 15 wherein the clocking circuit includes a crystal oscillator.

17. The system of claim 13 wherein the ignition circuit includes an ignition capacitor that when drained induces an ignition pulse adapted to fire a spark plug, and wherein at least a portion of the antenna is within an inch of the ignition capacitor.

Assignees

• Walbro Llc

Inventors

• Andersson Martin N
• Healy Cyrus M

Classifications

• F02P11/00 Primary

  Safety means for electric spark ignition, not otherwise provided for · CPC title

• F02P3/06 Primary

  having capacitive energy storage (piezoelectric or electrostatic ignition F02P3/12) · CPC title

• F02P11/04

  Preventing unauthorised use of engines (of vehicles B60R25/04; ignition locks H01H27/00) · CPC title

• F02P5/1502

  using one central computing unit · CPC title

• F02B63/02

  for hand-held tools · CPC title