Automatic stop/start-up control apparatus of an engine
First Claim
1. An automatic stop/start-up control apparatus for a vehicle including an internal combustion engine which automatically stops the engine when an automatic stop condition is satisfied while the engine is driven, and which automatically starts the engine when an automatic start-up condition is satisfied while the engine is stopped, comprising:
- a power assist detector for detecting a power assist of an underpressure assist type brake apparatus equipped in the vehicle; and
a controller for controlling so as to automatically start the engine when a decrease rate per unit time of power assist, which said power assist detector detects while said engine is automatically stopped, exceeds a first set value,wherein said controller,.while the engine is automatically stopped, controls the engine to automatically start when a decrease rate per unit time of power assist, which said power assist detector detects, is a value less than said first set value, but more than a second set value that is set below the first set value, when counted more than a set number of times.
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Accused Products
Abstract
An automatic stop/start-up control system of an engine, recognizes an early drop of a power assist for brakes while the engine is automatically stopped. The control system enables the will of a driving person to be adequately reflected and the driving person does not feel a sense of incongruity when braking. Accordingly, the automatic stop/start-up control apparatus automatically stops the engine when an automatic stop condition is satisfied while the engine is driven, and automatically starts up the engine when an automatic start-up condition is satisfied while start-up of the engine is stopped. The control apparatus includes a power assist detector to detect power assist of an underpressure assist type brake apparatus equipped in the vehicle and a controller to control so as to automatically start up the engine when a decreasing rate per unit time of power assist, which the power assist detector detects while the engine is automatically stopped, exceeds a first setting value.
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Citations
11 Claims
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1. An automatic stop/start-up control apparatus for a vehicle including an internal combustion engine which automatically stops the engine when an automatic stop condition is satisfied while the engine is driven, and which automatically starts the engine when an automatic start-up condition is satisfied while the engine is stopped, comprising:
- a power assist detector for detecting a power assist of an underpressure assist type brake apparatus equipped in the vehicle; and
a controller for controlling so as to automatically start the engine when a decrease rate per unit time of power assist, which said power assist detector detects while said engine is automatically stopped, exceeds a first set value,wherein said controller,.while the engine is automatically stopped, controls the engine to automatically start when a decrease rate per unit time of power assist, which said power assist detector detects, is a value less than said first set value, but more than a second set value that is set below the first set value, when counted more than a set number of times. - View Dependent Claims (2, 3, 4)
- a power assist detector for detecting a power assist of an underpressure assist type brake apparatus equipped in the vehicle; and
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5. A vehicle comprising:
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an internal combustion engine having an output shaft;
a negative pressure assist type brake apparatus;
a power assist detector for detecting a change in pressure from a decreasing pressure of the negative pressure assist type brake apparatus;
an automatic engine stop/start-up control apparatus for automatically stopping said engine when an automatic stop condition is satisfied while said engine is driven and for automatically starting said engine when an automatic start-up condition is satisfied while said engine is automatically stopped, said automatic engine stop/start-up control apparatus including a controller for automatically starting the engine when a value of the change in pressure detected by said power assist detector exceeds a first set value while said engine is automatically stopped. - View Dependent Claims (6, 7, 8)
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9. A hybrid vehicle comprising:
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an internal combustion engine having an output shaft;
an electric motor connected to the output shaft of said engine;
a negative pressure assist type brake apparatus;
a power assist detector for detecting a pressure change in negative pressure of the assist type brake apparatus;
an automatic engine stop/start-up control apparatus for automatically stopping said engine when an automatic stop condition is satisfied while said engine is driven and for automatically starting said engine when an automatic start-up condition is satisfied while said engine is automatically stopped, said automatic engine stop/start-up control apparatus including a controller for automatically starting the engine when said power assist detector detects a pressure change that exceeds a first set value while said engine is automatically stopped. - View Dependent Claims (10, 11)
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Specification