Ignition or fuel injection control system with auxiliary source

• US 6,684,839 B2
• Filed: 01/15/2002
• Issued: 02/03/2004
• Est. Priority Date: 11/23/2001
• Status: Active Grant

• Current Assignee: Tai-Her Yang
• Original Assignee: Tai-Her Yang
• Inventors: Yang, Tai-Her
• Primary Examiner(s): MOHANTY, BIBHU R
• Application Number:
  US10/044,972
• Publication Number:
  US 20030131816A1
• Time in Patent Office: 749 Days
• Field of Search: 123/179.1, 123/179.5, 123/179.24, 290/50, 320/104
• US Class Current: 123/179.1
• CPC Class Codes: F02D 41/062 for starting F02D41/061 takes precedence
• CPC Class Codes: F02N 11/0866 comprising several power sources, e.g. battery and capacitor or two batteries
• CPC Class Codes: F02P 15/12 having means for strengthening spark during starting

Abstract

An ignition system or a fuel injection system provided with a dedicated auxiliary source for the ignition device or the fuel injection control system and a separation diode to separate the auxiliary source from the battery source for the start-up motor thus to ensure good ignition performance by avoiding voltage drop at an ignition device or the fuel injection control system due to larger current is drawn by a start-up motor while starting an engine.

Claims

1. An ignition system or a fuel injection control system to ensure good ignition efficiency is provided with a dedicated auxiliary source separated from a primary system with a separation diode to avoid sudden drop at the ignition or the fuel injection control system due to significant battery drop, taking place as a start-up motor draws larger currents while starting the engine, essentially comprised of:

an engine 100;

comprised of an internal-combustion engine using diesel, gasoline engine, natural gas, or methanol as fuel and provided with a start-up motor 101;

the start-up motor 101;

comprised of a brush or brushless DC or AC motor, or a power generator with functions of a motor, manipulated by a motor start relay 102 to manipulate the battery source driven start-up motor 101 and further to draw the engine 100 through a transmission 302;

a start-up switch 103;

comprised of a mechano-electronic device or a solid-state electronic switching device to manipulate an ignition device and the motor start relay 102 or other car-laden electric devices;

a primary battery 104;

comprised of a rechargeable secondary battery or a super capacitor;

a separation diode 105;

comprised of a diode, provided between the primary battery 104 and a first rechargeable auxiliary storage 106 to execute one-way conduction of currents from the primary battery 104 to charge the first rechargeable auxiliary storage 106;

the first rechargeable auxiliary storage 106;

comprised of a rechargeable battery or a super capacitor, to store power for the primary battery 104, or car-laden power generator or other charging devices;

being prevented from inverse discharging to the primary battery 104 by means of the separation diode 105;

alternatively, a limiting impedance 108 comprised of a limiting induction or resistance connected in series is provided between the first rechargeable auxiliary storage 106 and a second rechargeable auxiliary storage 107 to limit the power discharged from the first rechargeable auxiliary storage 106 at the instant of ignition so to allow the full discharge to the ignition device by the second rechargeable auxiliary storage 107 before accepting the charging power from the first rechargeable auxiliary storage 106 through the limiting impedance 108 comprised of the limiting induction or resistance;

the second rechargeable auxiliary storage 107;

comprised of a rechargeable secondary battery or a super capacitor to supply instant power to the engine ignition device 109 upon igniting the engine;

a power generation unit 200;

comprised of a AC or DC power generator, drawn by the engine and a rear transmission 302 to produce DC output relatively rectified AC, or to forthwith produce DC output;

a regulation device 201;

to regulate power outputted from the power generator into power supply that can be consumed by the primary battery 104, the first rechargeable auxiliary storage 106, the second rechargeable auxiliary storage 107 and other loads; and

an engine shaft 300;

to output engine rpm to drive a load, to couple a front transmission 301 to the start-up motor 101, and to couple to the power generation unit 200 through a rear transmission 302;

a engine ignition device 109;

comprised of a mechano-electronic or a solid-state electronic circuit device, or combined thereof, to ignite the internal-combustion engine to keep engine running;

a fuel injection control system 110;

comprised of a fuel injection mechanism to execute throttle switching by controlling fuel ejection gap, and a circuit control device to control the fuel injection mechanism by referring to throttle openness, oil temperature, air inlet temperature, IP-ARB signals;

either or both of the engine ignition device or the fuel injection control system 110 is or are provided as applicable.

2. An ignition system or a fuel injection control system as claimed in claim 1, wherein, the first rechargeable storage 106 with higher energy density and the secondary rechargeable storage 107 with higher power density are selected to match ignition efficiency and cost efficiency.

3. An ignition system or a fuel injection control system as claimed in claim 1, wherein, both of the second rechargeable auxiliary storage 107 and the limiting impedance 108 are omitted, instead, a separation diode 105 is connected in series in positive direction between the primary battery 104 and the first rechargeable auxiliary storage 106 to execute one-way conduction to limit charging power to the first rechargeable auxiliary storage 106 by the primary battery 104, thus for the first rechargeable auxiliary storage 106 to supply power required by the engine ignition device 109 or by the fuel injection control system 110.

4. An ignition system or a fuel injection control system as claimed in claim 1, wherein, the engine ignition device 109 or the fuel injection control system 110, the first rechargeable auxiliary storage 106, the limiting impedance 108 and the second rechargeable auxiliary storage 107 are separately structured or sharing a common structure.

5. An ignition system or a fuel injection control system as claimed in claim 1, wherein, the engine ignition device 109 or the fuel injection control system 110, the first rechargeable auxiliary storage 106, and either or both of the first rechargeable auxiliary storage 106 and the secondary rechargeable auxiliary storage 107 are separately structured or sharing a common structure.

6. An ignition system or a fuel injection control system as claimed in claim 1, wherein, the engine ignition device 109 and either or both of the first rechargeable auxiliary storage 106 and the secondary rechargeable auxiliary storage 107 are independently structured.

7. An ignition system or a fuel injection control system as claimed in claim 1, wherein, the fuel injection control system 110 and either or both of the first rechargeable auxiliary storage 106 and the secondary rechargeable auxiliary storage 107 are independently structured.