2WD 48-inch Chassis Dynamometers

MAE’s emissions chassis dynamometers provide an extremely accurate, repeatable and responsive electrical inertia simulation vehicle test system.

Standard Features

• Compliant with EPA 75, EPA SFTP (US06), ECE + EUDC, Japanese 10-15 Mode, EURO III, IV and V
• Emissions Certification Dynamometers
• High accuracy and repeatability with fast response electrical inertia simulation
• Automated dynamometer testing routines
• Floor level calibration
• Bearing heaters
• Bi-directional bearing race rotation
• Non-vertical loading restraint system
• Brake & throttle actuators available
• 4×2 and 4×4 configurations, upgradable
• Robust design for trouble-free operational life

Today’s advanced vehicle emission testing requires the use of repeatable and highly accurate dynamometers that are capable of testing vehicles under precisely simulated road load conditions in an emissions laboratory. The 48” motor-in-the-middle chassis dynamometer sets the standard in the industry for emissions certification and mileage accumulation applications.

Mustang Advanced Engineering is widely regarded as a leading global provider of chassis dynamometer systems for a wide range of applications that require accurate and repeatable road load simulation, speed control, force control or acceleration control. MAE has developed its 48” Chassis Dynamometers to exceed the demanding performance criteria required by the US EPA directive, FTP 75 / SFTP (US06) EUDC standards.

These criteria include:

• Accurate Road Load simulation to ensure the vehicle is tested under operational conditions.
• Fast, critically damped Inertia simulation response to provide realistic loading of the test vehicle powertrain.
• Accurate synchronization of multi-roller systems to provide “on the road” type conditions.
• Effective parasitic loss compensation.

MAE’s emissions chassis dynamometers provide an extremely accurate, repeatable and responsive electrical inertia simulation vehicle test system. The 48″ chassis dynamometer utilizes an AC motor centrally mounted between the rollers that provides a compact, low maintenance design. The MIM configuration offers the most compact envelope dimension in the 48” roll product class, while the cradle-mounted configuration of the PCU makes possible the use of a highly accurate strain gauge load cell in lieu of an in-line torque flange. Both light duty and medium duty PCU sizes are available. High quality bearings and a robust structural design help to ensure long life and low maintenance of the equipment.

The standard MIM configuration utilizes manually operated vehicle alignment and restraint systems, while automated side-to-side and fore-to-aft alignment mechanisms are available as optional features.

For climatic chamber applications MAE offers extreme temperature chamber packages which insure proper dynamometer operation at even the most extreme hot/cold testing conditions. For applications that require the testing of AWD vehicles, the MIM Series is available in an AWD configuration. In most cases the 2WD MIM class dynamometer can be upgraded in the future to the AWD-MIM chassis dynamometer. MAE’s standard wheelbase range accommodates vehicles with wheelbases ranging from 80 to 150 inches. Optionally, systems can be designed to accommodate vehicles with a wheelbase of up to 185 inches.

MAE’s proprietary control system includes several automated routines to test and validate all the main performance criteria.?Emission chassis dynamometer solutions are also available for truck and motorcycle applications.

Specifications

Model Number	MAE-AC-150.48-MIM-2WD-LDV	MAE-AC-200.48-MIM-2WD-MDPV	MAE-AC-250.48-MIM-2WD-MDV
TECHNICAL SPECIFICATIONS
Test Vehicle Range	Automobile, Light Truck	Automobile, Light Truck, Medium Duty Passenger Vehicles	Automobile, Light Truck, Medium Duty Passenger Vehicles & Trucks
Inertia Simulation Range: (with 8.4 mph/sec, US06)	1000 – 7,500 Lb. (455 – 3,409 Kg.)	1000 – 10,000 Lb. (455 – 4,545 Kg.)	1000 – 14,000 Lb. (455 – 6,364 Kg.)
Inertia Simulation Range: (with 3.5 mph/sec, FTP-75)	1000 – 14,000 Lb. (455 – 6,363 Kg.)	1000 – 14,000 Lb. (455 – 6,363 Kg.)	1000 – 14,000 Lb. (455 – 6,363 Kg.)
Mechanical Base Inertia	3,000 Lb. (1,364 Kg)	4,410 Lb. (2,000 Kg)	4,410 Lb. (2,000 Kg)
Electrical Inertia Increment	1 Lb. (0.45 Kg)	1 Lb. (0.45 Kg)	1 Lb. (0.45 Kg)
Motor Power (Continuous) (1)	150 HP @ 57 mph(112 kW @ 92 km/hr)	200 HP @ 57 mph(150 kW @ 92 km/hr)	250 HP @ 57 mph(187 kW @ 92 km/hr)
Motor Power (1-min) 150% OL	225 HP @ 57 mph(168 kW @ 92 km/hr)	300 HP @ 57 mph(225 kW @ 92 km/hr)	375 HP @ 57 mph(280 kW @ 92 km/hr)
Motor Power (10-sec) Peak	300 HP @ 57 mph(225 kW @ 92 km/hr)	400 HP @ 57 mph(300 kW @ 92 km/hr)	583 HP @ 57 mph(435 kW @ 92 km/hr)
Axle Weight Capacity	8,500 Lb. (3,860 Kg)	10,000 Lb. (4,545 Kg)	10,000 Lb. (4,545 Kg)
Standard Operating Speed Range (2)	0 – 100 mph (0 -160 km/hr)	0 – 100 mph (0 -160 km/hr)	0 – 100 mph (0 -160 km/hr)
Wheel Force (Continuous) below 57 mph (92 km/hr)	985 Lb. (4,382 N)	1,313 Lb. (5,840 N)	1,641 Lb. (7,300 N)
Wheel Force (Peak) below 57 mph (92 km/hr)	2,000 Lb. (8,900 N)	2,593 Lb. (11,534 N)	3,816 Lb. (16,975 N)
Dyne Motor & Drive Response	< 5 ms	< 5 ms	< 5 ms
Closed Loop Response Time ( 90% of Step Command)	< 10 ms	< 10 ms	< 10 ms
System Response Time from a Change in  Acceleration Rate to 90% of Command	< 43 ms (min)Adjustable to < 100 ms	< 43 ms (min)Adjustable to < 100 ms	< 43 ms (min)Adjustable to < 100 ms
Speed Accuracy	+/- 0.001 mph(+/- 0.0016 km/hr)	+/- 0.001 mph(+/- 0.0016 km/hr)	+/- 0.001 mph(+/- 0.0016 km/hr)
Acceleration Accuracy (digitally)	+/- 0.002 mph/sec(+/- 0.0032 km/hr-sec)	+/- 0.002 mph/sec(+/- 0.0032 km/hr-sec)	+/- 0.002 mph/sec(+/- 0.0032 km/hr-sec)
PHYSICAL DIMENSIONS
Roll Diameter	48 in +/-0.005 in(1219.2 mm, +/- 0.127 mm)	48 in +/-0.005 in(1219.2 mm, +/- 0.127 mm)	48 in +/-0.005 in(1219.2 mm, +/- 0.127 mm)
Roll Run Out (across face)	< +/-0.010 in(<+/- 0.254 mm)	< +/-0.010 in(<+/- 0.254 mm)	< +/-0.010 in(<+/- 0.254 mm)
Roll Surface	Chrome Plated	Chrome Plated	Chrome Plated
Roll Surface Finish	Ra 200 +/-100 micro-inch	Ra 200 +/-100 micro-inch	Ra 200 +/-100 micro-inch
Roll Width	29 in (736 mm)	36 in (914 mm)	36 in (914 mm)
Roll Inside Track Width	36 in (914 mm)	36 in (914 mm)	36 in (914 mm)
Roll Outside Track Width	94 in (2,387 mm)	108 in (2,743 mm)	108 in (2,743 mm)
Base Dyne Dimension (Width x Length x Depth)	118 x 72 x 63 in(2,997 x 1,829 x 1,600 mm)	132 x 72 x 63 in(3,353 x 1,829 x 1,600 mm)	132 x 72 x 63 in(3,353 x 1,829 x 1,600 mm)
Base Dyne Weight	22,000 Lb. (10,000 Kg)	24,500 Lb. (11,150 Kg)	24,500 Lb. (11,150 Kg)
Pit Dimension (W x L x D) (min)	154 x 130 x 63 in(3,910 x 3,300 x 1,600 mm)	168 x 130 x 63 in(4,267 x 3,300 x 1,600 mm)	168 x 130 x 63 in(4,267 x 3,300 x 1,600 mm)
ELECTRICAL / CONTROLS
Physical Encoder Pulse Per Revolution	18,000 ppr(72,000 ppr after Quadrature)	18,000 ppr(72,000 ppr after Quadrature)	18,000 ppr(72,000 ppr after Quadrature)
Encoder Accuracy	1.25 arcsec	1.25 arcsec	1.25 arcsec
Load Cell Operating Range (As a function of wheel force)	+/- 2,000 lb. +/- 8,900 N	+/- 3,000 lb. +/- 13,345 N	+/- 4,000 lb. +/- 17,800 N
Load Cell Accuracy (With heated enclosure)	+/- 0.05%	+/- 0.05%	+/- 0.05%
Dyne Drive Type	IGBT Based with Direct Torque Control	IGBT Based with Direct Torque Control	IGBT Based with Direct Torque Control
Dyne Drive Enclosure Size (L x W x H)	23.6 x 23.6 x 83.8 in.(600 x 600 x 2,129 mm)	47.9 x 27.5 x 91.3 in.(1,2000 x 697 x 2,318 mm)	47.9 x 27.5 x 91.3 in.(1,200 x 697 x 2,318 mm)
Power Supply Fuse Sizing (3)	400 amp	450 amp	800 amp
Dyne Controller (4)	PowerDyne™ Gen-4	PowerDyne™ Gen-4	PowerDyne™ Gen-4
Wheelbase Sensor Accuracy	+/- 0.1 in. (+/- 4 mm)	+/- 0.1 in. (+/- 4 mm)	+/- 0.1 in. (+/- 4 mm)
Energy Absorption Techniques• Regen to Power Lines• Resistor Loading	YesYes	YesYes	YesYes (Not Advised)
Isolation Transformer	Power Supply Dependent	Power Supply Dependent	Power Supply Dependent