Patent ID: 8694230
Filing Date: 2014-04-08
Classification: F02D,F02M,F04B,Y02T

Abstract:
1. A method of starting an engine in cold weather, the cold weather causing high viscosity of fuel in a fuel tank, comprising: a) providing a fuel pump that has at least one solenoid coil in an unlaminated magnetic circuit; b) disposing the fuel pump in the fuel tank; c) before cranking the engine for starting the engine, providing short, successive actuation voltage pulses to the solenoid coil to cause eddy current heating in the unlaminated magnetic circuit, each actuation voltage pulse being applied to the solenoid coil for a sufficiently short time so that current in the solenoid coil does not exceed an actuation current; d) turning on the fuel pump to commence fuel flow to the engine; e) cranking the engine for starting after the fuel pump has been turned on.