Optionally connectable four-wheel drive vehicle

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(11)

EP 2 228 249 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	12.01.2011 Bulletin 2011/02

(43)	Date of publication:
	15.09.2010 Bulletin 2010/37

(21)	Application number: 10155259.4

(22)	Date of filing: 02.03.2010

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International Patent Classification (IPC):

B60K 17/35^(2006.01)
F16H 3/091^(2006.01)
F16H 3/56^(2006.01)
B60K 17/354^(2006.01)

B60K 23/08^(2006.01)
F16H 3/093^(2006.01)
F16H 3/60^(2006.01)
F16H 37/02^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
	Designated Extension States:
	AL BA ME RS

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Priority:

03.03.2009 IT BO20090123

(71)	Applicant: FERRARI S.p.A.
	Modena (IT)

(72)	Inventor:
	Cimatti, Franco 41026, Pavullo (IT)

(74)	Representative: Jorio, Paolo et al
	STUDIO TORTA Via Viotti 9 10121 Torino 10121 Torino (IT)

(54)	Optionally connectable four-wheel drive vehicle

(57) An optionally connectable four-wheel drive vehicle (1) provided with: an engine (4) having a drive shaft (5); two main drive wheels (3); a main power train (7) permanently connecting the drive shaft (5) to the main drive wheels (3), and in turn comprising a transmission (10) and a main differential (11); two normally driven secondary drive wheels (2); and an optionally connectable secondary power train (15) for also connecting the drive shaft (5) to the secondary drive wheels (2), and in turn presenting a gear drive (17), at least one secondary clutch (16), which is connected on one side to the drive shaft (5) upstream from the transmission (10), and on the other side to the secondary drive wheels (2), and a unit (23; 41) for the reversal of the motion, which is controlled to reverse or not to reverse the direction of the motion.