US 2005/0229890 A1Published application

Auto start-stop device for internal combustion engine and motor vehicle equipped with auto start-stop device

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsKazuhiro Ichimoto, Osamu Harada, Yukio Kobayashi, Katsuhiko Yamaguchi, Daigo Ando, Takahiro Nishigaki, Ikuo Ando, Keiko Hasegawa, Mamoru Tomatsuri

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Abstract

The auto engine start control of the invention regulates a throttle valve to a restricted opening to reduce an air intake flow at an ordinary start of an engine (step S140). When the driver stamps on an accelerator pedal to raise an engine power demand Pe* to or above a preset threshold value Pref, the auto engine start control regulates the throttle valve to a standard opening to ensure the air intake flow corresponding to the engine power demand Pe* (step S150) and thereby cranks the engine. This arrangement desirably dampens potential vibration induced by ignition at the ordinary start of the engine, while ensuring prompt output of the required driving force from the engine under the condition of the higher engine power demand Pe*.

Claims10

Dependent claims

An auto start-stop device for an internal combustion engine that outputs power to a drive shaft, said auto start-stop device automatically stopping the internal combustion engine under a preset stop condition, while restarting the automatically stopped internal combustion engine under a preset start condition, said auto start-stop device comprising:

an air intake flow regulation module that regulates an air intake flow to the internal combustion engine;
a power demand setting module that sets a power demand to be output from the internal combustion engine in response to an operator's operation;
and
a start-time air intake flow control module that controls said air intake flow regulation module under the preset start condition to start the internal combustion engine with a less air intake flow to the internal combustion engine when the set power demand is lower than a preset reference level, while controlling said air intake flow regulation module under the preset start condition to start the internal combustion engine with a greater air intake flow to the internal combustion engine when the set power demand is not lower than the preset reference level.

1 more element

A motor vehicle, comprising:

an internal combustion engine that outputs power to a drive shaft linked with an axle;
an auto start-stop module that automatically stops said internal combustion engine under a preset stop condition, while restarting said automatically stopped internal combustion engine under a preset start condition;
an air intake flow regulation module that regulates an air intake flow to said internal combustion engine;
a power demand setting module that sets a power demand to be output from said internal combustion engine in response to an operator's operation;
and
a start-time air intake flow control module that controls said air intake flow regulation module under the preset start condition to start said internal combustion engine with a less air intake flow to said internal combustion engine when the set power demand is lower than a preset reference level, while controlling said air intake flow regulation module under the preset start condition to start said internal combustion engine with a greater air intake flow to said internal combustion engine when the set power demand is not lower than the preset reference level.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/108,859Filed 19 Apr 2005
Priority: JP 2004-12421020 Apr 2004
Published: 20 Oct 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

B60W 10/06
Including control of propulsion units: including control of combustion engines
B60K 6/445
Series-parallel type: differential gearing distribution type
F02D 11/105
Of the electric type: characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal…
F02D 41/0002
Electrical control of supply of combustible mixture or its constituents: controlling intake air