Section 12: BRAKE AND AIR SYSTEM
PA1564
30
30. AUTOMATIC TRACTION CONTROL (ATC)
– ELECTRONIC STABILITY PROGRAM (ESP)
In addition to the ABS function, advanced
models of Bendix EC-60 controllers provide an
Automatic Traction Control (ATC)
feature.
Bendix ATC can improve vehicle traction during
acceleration, and lateral stability while
accelerating through curves. ATC utilizes
Engine Torque Limiting (ETL)
where the ECU
communicates with the engine’s controller
and/or
Differential Braking (DB)
where
individual wheel brake applications are used to
improve vehicle traction.
The EC-60 advanced model controller also
provide ABS-based stability features referred to
as
ESP
®
Electronic Stability Program
.
The Bendix ESP system is an ABS-based
stability system that enhances vehicle stability
by both reducing engine throttle and by applying
vehicle braking based on actual vehicle
dynamics. Accordingly, the ESP system is
available only on specific approved vehicle
platforms after vehicle application and
development efforts and validation testing. Only
certain limited variations of an approved vehicle
platform are permitted without further validation
of the ESP system application.
ESP stability system consists of Yaw Control
(YC) and Roll Stability Program (RSP) features.
CAUTION
Even with ESP-equipped vehicles, the driver
remains responsible for ensuring vehicle
stability during operation.
30.1 COMPONENTS
30.1.1 The EC-60
TM
controller’s ABS function
utilizes the following components:
•
Six (6) Bendix
®
WS-24
TM
wheel speed
sensors. Each sensor is installed with a
Bendix Sensor Clamping Sleeve;
•
Five (5) Bendix
®
Pressure Modulator
Valves (M-32QR
TM
);
•
Dash-mounted vehicle ABS Indicator
Lamp;
•
Service brake relay valve;
•
Dash-mounted trailer ABS Indicator Lamp.
30.1.2 The EC-60
TM
controller’s ATC function
utilizes the following components:
•
Drive axle traction control valve;
•
Dash-mounted ATC status/indicator lamp;
•
J1939 serial communication to engine
control module.
30.1.3 The EC-60
TM
controller’s ESP/RSP
function utilizes the following components:
•
Front Axle Traction Control Valve integral
to the service brake relay valve;
•
Dash-mounted ESP status/indicator lamp
(also serves as the ATC status/indicator
lamp;
•
Bendix
SAS-60
TM
Steering Angle Sensor
(mounted to the steering column);
•
Bendix YAS-60TM Yaw Rate/Lateral
Acceleration Sensor (mounted to a cross
member forward of the drive axle);
•
Brake Demand Sensors (installed in the
primary and secondary delivery circuits);
•
Load Sensor (installed in the suspension
air spring;
•
An additional Modulator Valve (Bendix
®
M-32QR
TM
Pressure Modulator Valve) that
controls pressure apply to the trailer
brakes during system intervention.
30.1.4 Bendix
®
M-32QR
TM
Pressure Modulator
Valves (PMV)
This Bendix
®
M-32QR
TM
Pressure Modulator
Valves (PMV) is operated by the EC-60
TM
controller to modify driver applied air pressure to
the service brakes during ABS, ATC, RSP or YC
activation. The PMV is an electro pneumatic
control valve and is the last valve that air passes
through on its way to the brake chamber. The
modulator hold and release solenoids are
activated to “modulate” or “control” the brake
pressure during an antilock braking event. The
hold solenoid is normally open and the release
solenoid is normally closed, such that the PMV
nominally allows air to flow through. This design
allows for air delivery to brake chambers in the
event of electrical trouble.
The Advanced EC-60TM controller also utilizes
an additional PMV for control of the trailer
service brakes during stability interventions.
Содержание LE MIRAGE XLII BUS SHELLS
Страница 1: ...COACH MANUFACTURER MAINTENANCE MANUAL LE MIRAGE XLII BUS SHELLS PA1564 1ST EDITION...
Страница 12: ...Section 00 GENERAL INFORMATION 10 PA1564 FIGURE 13 METRIC US STANDARD CONVERSION TABLE 00005...
Страница 13: ...Section 00 GENERAL INFORMATION PA1564 11 FIGURE 14 CONVERSION CHART 00006...
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Страница 63: ...SECTION 01 ENGINE PA1564 33 FIGURE 13 POWER PLANT CRADLE INSTALLATION 01140...
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Страница 229: ...FAULT CODE MANUAL Created on 00 04 25 15 30 1 FAULT CODE MANUAL B7L B7TL B12...
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Страница 303: ...SPICER SPECIALITY AXLE DIVISION place product photo here SERVICE MANUAL GENERAL INFORMATION NDS Axle range BACK RETOUR...
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Страница 348: ...Page No 18 Manual No NDS8 Spicer Speciality Axle Division Technical Publications Spicer Speciality Axle Division TP1193...
Страница 379: ...Section 12 BRAKE AND AIR SYSTEM PA1564 21 FIGURE 38 AIR OPERATED BRAKING SYSTEM WE...
Страница 380: ...Section 12 BRAKE AND AIR SYSTEM PA1564 22 FIGURE 39 AIR OPERATED BRAKING SYSTEM W5...
Страница 387: ...Section 12 BRAKE AND AIR SYSTEM PA1564 29 FIGURE 46 ABS 6S 5M CONFIGURATION...
Страница 418: ...16 BW2158 Honeywell Commercial Vehicle Systems Company 4 2001 Printed in USA...
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Страница 782: ...Section 16 SUSPENSION PA1564 22 FIGURE 26 SWAY BAR FRONT SUSPENSION 16138D FIGURE 27 SWAY BAR REAR SUSPENSION 16014...
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Страница 1083: ...Section 22 HEATING AND AIR CONDITIONING PA1564 15 FIGURE 16 REFRIGERANT CIRCUIT CENTRAL SYSTEM 22247...
Страница 1086: ...Section 22 HEATING AND AIR CONDITIONING PA1564 18 FIGURE 17 DOUBLE SWEEP EVACUATION SET UP...
Страница 1106: ...Section 22 HEATING AND AIR CONDITIONING PA1564 38 FIGURE 39 REFRIGERANT CIRCUIT SMALL SYSTEM 22350...
Страница 1108: ...Section 22 HEATING AND AIR CONDITIONING PA1564 40 FIGURE 42 CENTRAL HEATING SYSTEM COMPONENTS 22338...
Страница 1118: ...Section 22 HEATING AND AIR CONDITIONING PA1564 50 FIGURE 54 HEATER LINE SHUTOFF VALVES WE...
Страница 1119: ...Section 22 HEATING AND AIR CONDITIONING PA1564 51 FIGURE 55 SMALL HEATING SYSTEM COMPONENTS 22337...
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Страница 1125: ...Compressor 62 11052 Rev A WORKSHOP MANUAL for MODEL 05G TWIN PORT COMPRESSOR R...
Страница 1126: ...WORKSHOP MANUAL COMPRESSOR MODEL 05G TWIN PORT...
Страница 1149: ...Compressor 62 11053 Rev B SERVICE PARTS LIST for MODEL 05G TWIN PORT COMPRESSOR 1 2 3 4 5 6 R...
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Страница 1205: ...Section 24 LUBRICATION PA1564 5 FIGURE 1 LUBRICATION AND SERVICING POINTS ON INDEPENDENT FRONT SUSPENSION VEHICLES 24036_1...
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Страница 1223: ...Section 26 XLII SLIDE OUT PA1564 11...
Страница 1224: ...Section 26 XLII SLIDE OUT PA1564 12 FIGURE 16 KEYLESS BUSHING INSTALLATION INSTRUCTION...