Motor vehicle and control method of motor vehicle

Details Motor vehicle and control method of motor vehicle Motor vehicle and control method of motor vehicle

2011-08-09

2011-08-09

Hellner, Mark (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

C701S051000, C701S054000, C701S065000, C701S070000, C701S079000, C701S084000, C701S085000, C701S094000, C701S101000, C180S197000, C477S169000, C477S173000, C477S174000, C477S108000, C477S090000

Reexamination Certificate

active

07996139

ABSTRACT:
During a starting operation or a low-speed drive of a vehicle on a slope, the drive control of the invention sets a gradient-corresponding rotation speed Nθ as a rotation speed of an engine to output a required driving force against a longitudinal vehicle gradient θfr (step S110), and sequentially sets a low-μ-road correction rotation speed Nlow upon identification of a low-μ-road drive condition, a vehicle speed difference-compensating rotation speed Nv based on a vehicle speed V, and a brake-based correction rotation speed Nb based on a brake pressure Pb (steps S120through S250). The drive control sets a target engine rotation speed Ne* based on these settings (step S260) and subsequently sets a target throttle opening THtag (step S270). The operation of the engine is controlled with the greater between the target throttle opening THtag and a required throttle opening THreq corresponding to an accelerator opening Acc (step S290). This arrangement effectively prevents an unexpected slide-down of the vehicle along the slope.

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