Method of Controlling Engine Stop-Start Operation for Heavy-Duty Hybrid-Electric and Hybrid- Hydraulic Vehicles
First Claim
1. A method for efficiently controlling an engine of a heavy-duty hybrid-electric vehicle of at least 10,000 pounds Gross Vehicle Weight Rating (GVWR), the heavy-duty hybrid-electric vehicle having a generator, an inverter, a propulsion motor, a first energy storage, and a control computer, the method comprising:
- enabling a function comprising at least one of a Stop-Start and an Idle-Stop function;
determining a first vehicle propulsion power requirement associated with an emergency situation of the heavy-duty hybrid-electric vehicle;
determining a first energy storage first State Of Charge;
when the energy storage first State Of Charge is above an energy storage first State Of Charge minimum threshold, turning off the engine if the first vehicle propulsion requirement is below a first vehicle propulsion requirement minimum threshold; and
,when the energy storage first State Of Charge is below an energy storage first State Of Charge minimum threshold, turning off the engine if the first vehicle propulsion requirement is below a first vehicle propulsion requirement minimum threshold.
11 Assignments
0 Petitions
Accused Products
Abstract
A start-stop or idle-stop method for a heavy-duty hybrid vehicle that turns off the fuel supply while maintaining the crankshaft rotation of the internal combustion engine when the vehicle stops or, optionally, when the vehicle travels downhill, travels in a noise sensitive location, travels in an exhaust emissions sensitive location, or operates in an emergency situation. The stop-start or idle-stop method automatically turns on the engine fuel supply to restart combustion when the vehicle starts accelerating, is no longer traveling downhill, is no longer traveling in a noise sensitive or exhaust sensitive location, is no longer in an emergency situation, or has dropped below the minimum energy storage restart level.
-
Citations
22 Claims
-
1. A method for efficiently controlling an engine of a heavy-duty hybrid-electric vehicle of at least 10,000 pounds Gross Vehicle Weight Rating (GVWR), the heavy-duty hybrid-electric vehicle having a generator, an inverter, a propulsion motor, a first energy storage, and a control computer, the method comprising:
-
enabling a function comprising at least one of a Stop-Start and an Idle-Stop function; determining a first vehicle propulsion power requirement associated with an emergency situation of the heavy-duty hybrid-electric vehicle; determining a first energy storage first State Of Charge; when the energy storage first State Of Charge is above an energy storage first State Of Charge minimum threshold, turning off the engine if the first vehicle propulsion requirement is below a first vehicle propulsion requirement minimum threshold; and
,when the energy storage first State Of Charge is below an energy storage first State Of Charge minimum threshold, turning off the engine if the first vehicle propulsion requirement is below a first vehicle propulsion requirement minimum threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification