Motor control device
AssigneeDenso Corporation
InventorsYuichi Seo, Yuuji Hidaka
Life of this patent
Estimating the term…
Abstract
A motor control device configured to control a motor that drives a fuel pump includes a sign detection unit and a vapor suppression unit. The sign detection unit is configured to detect a sign of a vapor lock that is an abnormality in which the fuel pump is unable to discharge a fuel due to a vapor inside the fuel pump. The vapor suppression unit is configured to change a rotation speed of the motor to reduce the vapor inside the fuel pump when the sign detection unit detects the sign of the vapor lock.
Claims12
A motor control device configured to control a motor that drives a fuel pump, comprising:
- a processor and memory configured to
- detect a sign of a vapor lock that is an abnormality in which the fuel pump is unable to discharge a fuel due to a vapor inside the fuel pump,
- change a rotation speed of the motor to reduce the vapor inside the fuel pump with the processor and memory detects the sign of the vapor lock, and
- detect the sign of the vapor lock when a vibration determination condition is satisfied, which indicates that a current value of the motor or the rotation speed of the motor oscillates with an amplitude equal to or greater than a preset sign determination value.
A motor control device configured to control a motor that drives a fuel pump, comprising:
- a computer including a processor and a memory that stores instructions configured to, when executed by the processor, cause the processor to
- detect a sign of a vapor lock that is an abnormality in which the fuel pump is unable to discharge a fuel due to a vapor inside the fuel pump,
- change a rotation speed of the motor to reduce the vapor inside the fuel pump when the sign of the vapor lock is detected, and
- notify that the vapor lock remains when the vapor lock remains after a preset recovery determination time elapses since a change of the rotation speed of the motor.
A motor control device configured to control a motor that drives a fuel pump, comprising:
- a processor and memory configured to
- detect a sign of a vapor lock that is an abnormality in which the fuel pump is unable to discharge a fuel due to a vapor inside the fuel pump,
- change a rotation speed of the motor to reduce the vapor inside the fuel pump when the processor and memory detects the sign of the vapor lock, and
- detect the sign of the vapor lock when a vibration determination condition is satisfied, which indicates that the rotation speed of the motor oscillates with an amplitude equal to or greater than a preset sign determination value.
Dependencies are inferred from the claim text.