ENGINE SPEED CALCULATION DEVICE AND ENGINE SOUND GENERATION DEVICE
First Claim
1. An engine sound generation device comprising:
- an accelerator opening sensor detecting an accelerator opening of a vehicle;
a vehicle speed sensor detecting a vehicle speed of the vehicle;
a vehicle-nondependent engine speed memory storing a virtual engine speed which depends upon the accelerator opening but does not depend upon the vehicle speed in advance; and
an engine speed calculation unit acquiring the virtual engine speed from the vehicle-nondependent engine speed memory in correspondence with the accelerator opening on the condition that the virtual engine speed is not deemed proportional to the vehicle speed.
1 Assignment
0 Petitions
Accused Products
Abstract
An engine sound generation device adapted to an electric vehicle includes an engine speed calculation unit which calculates the virtual engine speed based on the motor revolution speed, vehicle speed, and acceleration opening. The engine speed calculation unit calculates the virtual engine speed with reference to the vehicle-dependent engine speed memory on the condition that the virtual engine speed is deemed proportional to the vehicle speed. In addition, the engine speed calculation unit calculates the virtual engine speed with reference to the vehicle-nondependent engine speed memory on the condition that the virtual engine speed is not deemed proportional to the vehicle speed, thus generating the common engine sound matching the behavior of an engine in a prescribed event such as the startup of the electric vehicle and the semi-engagement of a clutch.
-
Citations
5 Claims
-
1. An engine sound generation device comprising:
-
an accelerator opening sensor detecting an accelerator opening of a vehicle; a vehicle speed sensor detecting a vehicle speed of the vehicle; a vehicle-nondependent engine speed memory storing a virtual engine speed which depends upon the accelerator opening but does not depend upon the vehicle speed in advance; and an engine speed calculation unit acquiring the virtual engine speed from the vehicle-nondependent engine speed memory in correspondence with the accelerator opening on the condition that the virtual engine speed is not deemed proportional to the vehicle speed. - View Dependent Claims (2, 3, 4, 5)
-
Specification