Engine startup control device and control method
US6253127A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Oct 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/946
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid vehicle is provided with an engine (2), a first motor (1) for starting the engine (2), a generator (1) for driving the engine (2), drive wheels (8) connected to the engine (2) via a clutch (3), and a second motor (4) for driving the drive wheels (8). A battery (15) connected to the first motor (1), second motor (4) and generator (1) is further provided. A control device which controls the engine startup by the first motor (1) comprises a sensor (27) which detects a rotation speed of the engine (2), a sensor (26) which detects the charge amount of the battery (15), a power controller (11) which varies the current supplied to the first motor (1) from the battery (15) according to a signal, and a microprocessor (16) which outputs the signal. The microprocessor (16) calculates a target output torque of the first motor (1) according to the charge amount of the battery (15). When the rotation speed of the engine (2) is less than a predetermined target rotation speed, the signal is set so that the output torque of the first motor (1) coincides with a predetermined output torque, and after the rotation speed of the engine (2) reaches the predetermined target rotation speed, the si…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.