×

Starter motor control with pre-spin

  • US 9,528,487 B2
  • Filed: 11/17/2011
  • Issued: 12/27/2016
  • Est. Priority Date: 11/17/2011
  • Status: Active Grant
First Claim
Patent Images

1. A circuit for initiating a starting sequence for an internal combustion engine comprising:

  • a source of electrical power;

    a starter motor;

    a gear system selectively coupling said starter motor to an engine to be started;

    a control circuit for providing electrical energy only to said starter motor initially for a predetermined time completely bypassing a starting solenoid and subsequently providing electrical energy to the starting solenoid such that said gear system starts rotating the engine from a non-rotating state, wherein the source of electrical power continually outputs 7.5 or more volts during the starting sequence;

    a first conductor directly connecting the control circuit to the starter motor, the first conductor providing a control signal to turn on a pair of parallel, coupled switches having a first terminal coupled to the source of electrical power and a second terminal coupled to the starter motor directly, wherein the first conductor is wrapped such that a first current level is supplied to the motor; and

    a second conductor coupled to the starting solenoid, wherein the solenoid receives a second current level that is greater than the first current level.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×