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A High Power Density Transfer Case Assembly For A Four Wheel Drive Vehicle
Abstract: A HIGH POWER-DENSITY TRANSFER CASE ASSEMBLY FOR A FOUR- WHEEL DRIVE VEHICLE ABSTRACT A high power-density transfer case assembly (100) for a four-wheel drive vehicle is disclosed. The assembly (100) comprises an input shaft (102) configured to receive torque from a transmission, and first and second output shaft (106) arranged to transmit the torque to respective front and rear drive axles. A multi-stage helical gear train (108) configured to provide selectable high and low drive ratios for varied operating conditions. The input shaft (102) and output shafts are supported by a bearing system (110) including at least one roller bearing and at least one tapered roller bearing positioned at end and pilot locations to ensure stability and load distribution. The shafts, gear train (108), and bearing system (110) are enclosed within a cast iron structural housing that provides mechanical rigidity and protection. An electro-pneumatic two- way actuation system (112) selectively engages ratio selection and two-wheel or four- wheel drive modes
Notices, Deadlines & Correspondence
Patent Information
Applicants
VE COMMERCIAL VEHICLES LTD
Inventors
1. Deepansh Gill
2. Mohammad Minkash Qureshi
3. Dheeraj Kumar Singh
Claims
1. A high power-density transfer case assembly (100) for a four-wheel drive vehicle, comprising, the assembly (100) comprising: an input shaft (102) configured to receive torque from a transmission; a first output shaft (104) and a second output shaft (106) configured to transmit torque to respective front drive axle and rear drive axle; a multi-stage helical gear train (108) operatively disposed between the input shaft (102) and the first output shaft (104) and the second output shaft (106), the gear train (108) being configured to provide selectable high and low drive ratios; a bearing system (110) including at least one roller bearing and at least one tapered roller bearing supporting each of the input shaft (102) and the first output shaft (104) and the second output at end and pilot locations; a cast iron structural housing enclosing the input shaft (102), the output shafts, the gear train (108), and the bearing system (110); and an electro-pneumatic two-way actuation system (112) includin
Specification
Description:A HIGH POWER-DENSITY TRANSFER CASE ASSEMBLY FOR A FOUR-WHEEL DRIVE VEHICLE
FIELD OF THE DISCLOSURE
[0001] The present invention relates generally to the field of a vehicular drivetrain systems, and more particularly to a high power-density transfer case assembly for a four-wheel drive vehicle.
BACKGROUND OF THE INVENTION
[0002] The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.
[0003] Transfer case systems employed in commercial and off-road vehicle platforms are generally designed for application-specific use and are typically limite , Claims:I/We claim,
1. A high power-density transfer case assembly (100) for a four-wheel drive vehicle, comprising, the assembly (100) comprising:
an input shaft (102) configured to receive torque from a transmission;
a first output shaft (104) and a second output shaft (106) configured to transmit torque to respective front drive axle and rear drive axle;
a multi-stage helical gear train (108) operatively disposed between the input shaft (102) and the first output shaft (104) and the second output shaft (106), the gear train (108) being configured to provide selectable high and low drive ratios;
a bearing system (110) including at least one roller bearing and at least one tapered roller bearing supporting each of the input shaft (102) and the first output shaft (104) and the second output at end and pilot locations;
a cast iron structural housing enclosing the input shaft (102), the output shafts, the gear train (108), and the bearing system (110); and
an electro-pneumatic two-way actuation system (112) includin