Mazda Motor Corporation

Naldec Corporation

Mt Carbon Co., Ltd.

Yoshiki Kubo

Yoshiaki Anan

Katumi Miyahara

Hiroshi Ueda

Takeshi Yamane

Seiji Okazaki

Akio Sakamoto

Wataru Oda

Kohei Yamaguchi

Akemi Inami

Yohei Yagishita

Miwa Katayama

A graphite material for a negative electrode of a lithium-ion secondary battery is provided. A ratio Lc(112)/Lc(006) defined as a ratio of expansion of graphene sheets to sheet displacement ranges from 0.08 to 0.11, both inclusive. A crystallite size Lc(006) calculated from a wide-angle X-ray diffraction line ranges from 30 nm to 40 nm, both inclusive. An average particle size ranges from 3 &#x3bc;m to 20 &#x3bc;m, both inclusive.

Graphite material for negative electrode of lithium-ion secondary battery, lithium-ion secondary battery including the graphite material, and method of manufacturing graphite material for lithium-ion secondary battery

The main switch is turn on to supply electricity to the control unit for constant-speed crusing control, and a target vehicle speed is set on the basis of an instruction signal from a set switch. The constant-speed cruising control is executed so as for the actual vehicle speed to reach the target vehicle speed. As one of conditions for executing the constant-speed cruising control, the lapse of a predetermined time period from the start of the main switch is added. This arrangement enables the start of execution of the constant-speed cruising control only when the self-diagnosis of the control unit or initialization of various data has been completed.

Constant-speed cruising system for a vehicle

The constant-speed cruising control is performed on the basis of instruction signals from a set switch or the like so that the vehicle speed will reach a target vehicle speed. The constant-speed cruising control is executed so that all switches, such as the set switch or the like, which constitute the instruction signal generating unit, are turned off. This can inhibit the execution of the constant-speed cruising control if the set switch becomes fixed and stays in its ON state.

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Hiroshima, Japan

Yoshiki Kubo