US 2014/0156132 A1 · CONTROL DEVICE AND CONTROL METHOD FOR HYBRID VEHICLE

Abstract

A hybrid vehicle has a first running mode with an engine stopped and a second running mode with the engine operating. An ECU monitors information related to the frequency of intermittent startup of the engine in response to the startup and stoppage of the engine during vehicle running. The ECU executes running control such that startup of the engine is suppressed during the first running mode when in an operation pattern in which the frequency of intermittent startup is high. Accordingly, discomfort to the driver and degradation in fuel efficiency caused by repeating stoppage and startup of the engine frequently in a short period of time can be prevented.

Claims10

Dependent claims

A control device for a hybrid vehicle having an engine and a traction motor mounted, said control device comprising:

a running control unit that selects a first running mode with said engine stopped and a second running mode with said engine operating, based on a state of the vehicle, and
an engine control unit that starts said engine in association with modification from said first running mode to said second running mode, and stops said engine in association with modification from said second running mode to said first running mode,
said running control unit controlling running of said hybrid vehicle such that modification from said first running mode to said second running mode is suppressed when frequency of intermittent startup is high as compared to a case where the frequency of said intermittent startup is low, based on a count of stopping said engine within a predetermined period of time during vehicle running.

A control method for a hybrid vehicle having an engine and a traction motor mounted,

said hybrid vehicle being configured to select a first running mode with said engine stopped and a second running mode with said engine operating based on a state of the vehicle,
said control method comprising:
the step of monitoring a count of stopping said engine within a predetermined period of time during vehicle running according to stoppage and operation of said engine during vehicle running, and
the step of controlling running of said hybrid vehicle such that modification from said first running mode to said second running mode is suppressed when the frequency of said intermittent startup is high as compared to a case where the frequency of said intermittent startup is low, based on said count of stopping said engine within a predetermined period of time.

1 more element

Dependencies are inferred from the claim text.

Control device and control method for hybrid vehicle

Life of this patent

Control device and control method for hybrid vehicle

Life of this patent

Abstract

Claims10