Motorstart-Steuersystem für ein Hybrides Elektrofahrzeug

Details

Veröffentlichungs-Nr.

EP2525078

Aktenzeichen

EP12001435

Anmeldetag

2. März 2012

Veröffentlichung

18. Dezember 2019

Erteilung

18. Dezember 2019

Rechtsraum

EP

IPC

F02N11/04F02N15/02B60W10/06B60W10/08B60W20/00B60K6/48

Abstract

[Objective] By avoiding an excessive cranking torque when starting the engine by a motor/generator and expanding a motor running region, fuel economy is improved. [Solution means] For a large required acceleration, cranking torque Tcr is maintained to hold an initial value (maximum value), while, when the required acceleration is small, cranking torque Tcr will be adjusted to decrease. The time between an engine start command (start of cranking , t1, t3, t5) and the instant (t2, t4, and t6) at which engine rotation speed Ne reaches a predetermined rotation speed Ne is measured as an engine start time TMst, When the TMst is below a limit value TMst_Lim that is capable of starting the engine and acceptable (i.e., engine start responsiveness is too high), as shown at instants t2 and t4, Tcr will be adjusted to decrease by a decrease amount, ΔTcr_dec and updated, while the expression Mst ≧TMst_Lim is met (i.e., engine start responsiveness is too low), then Tcr will be adjusted by an increase amount ΔTcr_inc at instant t6 and updated.

Anmelder

Firmen

NISSAN MOTOR CO., LTD.
Nissan Motor Co., Ltd

Land

🇯🇵 Japan

Fachgebiete