초록 ▼

A fuel management control method for a hybrid electric vehicle drive having an internal combustion engine and an electric motor arranged in parallel such that both can propel the vehicle; the system including an electric motor driven fuel pump and a programmable microprocessor; and wherein the metho

A fuel management control method for a hybrid electric vehicle drive having an internal combustion engine and an electric motor arranged in parallel such that both can propel the vehicle; the system including an electric motor driven fuel pump and a programmable microprocessor; and wherein the method further includes monitoring vehicle speed and sensing braking pressure and directing signals of both vehicle speed and braking to the microprocessor and processing such inputs in accordance with an aggressive fuel management program including shut-off of fuel flow to the gas engine in response to vehicle braking at vehicle speeds above a predetermined maximum hysteresis speed and maintaining the fuel shut off during vehicle coasting above a predetermined speed while controlling the electric motor to provide regenerative braking or vehicle start during such fuel shut off modes of operation.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for controlling a hybrid vehicle drive comprising an internal combustion engine and an electric motor generator connected to a crankshaft of the internal combustion engine by a direct drive belt and wherein the electric motor is utilized to charge batteries dur

[ What is claimed is:] [1.]1. A method for controlling a hybrid vehicle drive comprising an internal combustion engine and an electric motor generator connected to a crankshaft of the internal combustion engine by a direct drive belt and wherein the electric motor is utilized to charge batteries during vehicle deceleration/coasting operation and during regular cruising if battery charge is low comprising the steps of:a) monitoring a vehicle speed;b) providing a brake pedal and a brake switch responsive to a brake pedal pressure and position for producing input signals;c) determining a gas pedal operation; if the gas pedal is depressed, maintain a fuel flow to the internal combustion engine; if the vehicle is stopped with the fuel flow off, releasing a brake to produce a brake position signal and operating the electric motor in accordance with the brake position signal to electrically turn the internal combustion engine to increase the vehicle speed to a predetermined creep speed; andd) providing the fuel flow and a spark to the internal combustion engine when a predetermined engine speed and a predetermined vehicle speed are reached.