air
bra
Technology/Process Description:
Anti-Lock
Braking System
SCL-Brakes division is the first Indian company to manufacture the
next generation braking system-Anti-Lock Brake System (ABS) and Anti-Spin
Regulation (ASR) developed with total in-house design technology. Anti-lock
Brake System (ABS) is a result of years of extensive research and it dramatically
improves vehicle stability under adverse road conditions, thus enhancing safety
and steerability.
Anti-Lock Brake System (ABS): The system detects an impending wheel lock
situation and momentarily releases the brake pressure on the locking wheel. The
brakes are reapplied as soon as the wheels have recovered.
A toothed wheel (pole
wheel) is fitted to the rotating wheel hub. A magnetic sensor mounted on each
wheel in close proximity to the pole wheel, generates electrical pulses when
the wheel rotates. The rate at which the pulses are generated (frequency) is a
measure of the wheel speed. This signal is read and processed by the Electronic
Control Unit (ECU). When a wheel is about to lock, the ECU sends an electrical
signal to the modulator valve solenoid, which releases pressure from the brake
chamber. When the wheel recovers sufficiently, the brake pressure is reapplied
by the ECU by switching off the signal to the modulator valve.
The modulator valve has
an additional ‘hold’ state which maintains pressure in the brake chamber, thus
optimizing the braking process. The cycling of the modulator valves (5 to 6
times per second) is continued till the vehicle comes to a controlled stop.
With ABS, the vehicle
remains completely stable even when the driver continues to press the brake
pedal during panic brake situations. The vehicle also remains steerable during
braking, thus avoiding accidents.
Anti Spin Regulation (ARS): The system detects through the sensors whether either or
both of the drive wheels are spinning. When both wheels spin, the engine power
is reduced by reducing fuel delivery, thus controlling the wheel spin. This is
achieved with the help of the ASR cylinder mounted on the accelerator linkage.
The stroke of the cylinder is regulated by the ECU, by energizing the
proportional valve in a controlled manner.
When
only one of the wheels is spinning, and the other wheel is on a surface with
good traction, the differential valve of the spinning wheel is energized. This
brakes the spinning wheel. Power is transmitted to the wheel on the good
tractive surface and helps the vehicle to come out of spin situation. Even in
this situation, the engine throttle may be reduced as required by activating
the proportional valve.
Company Profile
|
Company Name |
Sundaram-Clayton Limited |
|
Address |
Plot No. 2, Plot No. 3(SP),3rd
Main Road,Ambattur Industrial Estate Chennai-600058, Tamil Nadu, India |
|
Contact person |
Mr. A. Rajaraman |
|
Phone |
+91-44-26238000,52242000 Extn. 2307,09840617603 |
|
Fax |
+91-44-26241278,26238009 |
|
E-mail |
|
|
Web Site |
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|
Year of Establishment |
1962 |
|
Product(s) Manufactured |
Anti lock Air Braking System with
Anti Spin Regulation for Commercial
Vehicles |
|
Sales Turnover |
FY 05: USD 120 Mn FY 04: USD 93 Mn FY 03: USD 89 Mn |
|
Conformity to Standards |
Indian,European |
|
Compliance to ISO |
TS-16949,ISO 9001,ISO14001,QS-9000 |
|
Foreign Collaboration |
WABCO,Germany |
|
Manpower Total (Nos.) |
1100 |
|
Raw Materials / Equipment used |
Aluminum, Steel, Rubber, VMCs, SPMs
|
|
Effluent Generated |
Non Polluting |
Broad Profile of Project
Offer
|
Project |
To Manufacture Air Braking Systems (Anti Lock Braking with
Anti Spin Regulation |
|
Capacity per Annum |
1 Mn |
|
Land Requirements/ Building Requirements |
1000 Sq. M |
|
Plant & Machinery
and Test Equipment |
Vertical Machining Centre (VMC),Special
Purpose Machines (SPM) |
|
Electrical Installation |
200 |
|
Implementation Period |
6 Months |
|
Manpower Required |
1100 |
|
Raw Materials / Equipment Required |
Aluminum, Steel, Rubber, VMCs , SPMs |
|
Total Project Cost |
USD 0.9 Mn |
|
Expected Annual Sales |
USD 2 Mn |
|
Profitability |
11% |
|
Form of Offer |
Turnkey Project |