Home | About Us | Contact Us
Accessories
Engine Accessories
Chassis Accessories
Air Starters
Most Power Test dynamometers can be equipped with an optional air starter and flywheel, eliminating the need for an engine-mounted starting system.
Available in two models, for engines up to 900 c.i. and engines above 900 c.i., our air starters are available for both clockwise and counter clockwise operation.
Charge Air Coolers
Power Test's water to air charge air cooler replaces the vehicular after-cooler for testing air to air after-cooled engines in a test cell.
Internal water temperature is maintained through the use of an electronic temperature controller and an electric valve. Water temperature is adjustable between 90 and 190 Degrees F.
- LED temperature and set-point display
- Wall mountable or optional dolly available
- Stable to ± 2° F
Cooling Columns
Cooling Columns are used to regulate the flow of fresh water to maintain the desired engine water temperature during testing. Jacket water and separate circuit after cooler (SCAC) cooling columns are nearly identical except for the temperature regulator settings. The jacket water cooling columns have adjustable temperature settings of 160° to 230°F( 71° to 110°C).
The after cooler column has adjustable temperature settings of 75° to 135°F (34° to 57°C). For jacket water cooling systems requiring shunt lines, the columns have removable plugs for this purpose. Columns are equipped to allow the visual indication of combustion gas leaks into the engine water cooling system.
- Cart mounted for increased test-cell mobility
- Maintain desired engine water during testing
- Adjustable from 160° - 230° F (71° to 110° C)
Cooling Towers
A water recovery system should be considered if there is a limited capacity or excessive cost of the local water system (city or private), or if the local sewer system does not permit water temperatures of 77°C (170°F) or more. A water recovery system is in addition to a basic water system.
- Environmentally safe alternative to sewage disposal
Drive Shafts
The final connection between the Power Test dynamometer and the engine is made by a universal joint drive shaft. The shaft allows for some misalignment between the engine crankshaft and the dynamometer input flange. Power Test Dynamometer offers a wide range of models to suit your needs.
At no time should a dynamometer system be operated without a Drive Shaft Guard.
| Model | Input Torque | Operating Speed | Length |
|---|---|---|---|
| 1610 | 3,650 lb-ft | 4,000 RPM | 21-1/4" |
| 1810 | 6,500 lb-ft | 4,000 RPM | 30" |
| 1910 | 12,500 lb-ft | 3,000 RPM | 32" |
Drive Shaft Guards
Power Test offers a wide variety of drive shaft guards specially designed for protecting the test cell area and personnel from accidental flying debris should a malfunction occur during engine or electric motor testing.
Power Test's guards are constructed of 1/4" thick plate steel to provide some assurance of protection in the event of a drive shaft failure. It cannot guarantee protection from broken drive shaft bolts or connection accessories that may become projectiles.
Engine Adapters
Power Test offers a variety of custom-built flywheel, crankshaft, and bell housing adapters to connect your engine to the dynamometer.
We supply a variety of adapters for engines manufactured by Cummins, Cat, Detroit Diesel, Mercedes, and Volvo, and fabricate in-house so we are able to provide any type of crank or flywheel adapter you need.
Just tell us the engine type and we will provide an adapter to suit your application.
- A wide variety of adapters in stock for most popular applications
- In-house manufacturing allows us to make any adapter to suit your needs
- Most orders ship the same day
Engine Carts
Engine carts are designed for quick and accurate positioning of an engine to the dynamometer.
From the smallest load to 30,000 lbs., and engine lengths to 120 inches, these carts provide a 28", 32" or 38" centerline height.
- Universal Front Support allows for precise, rapid engine placement
- Cart available for engines up to 30,000 lbs. and 120" long
- Self aligning swivel casters
Fuel Measurement
The Gravimetric Fuel Measurement System manufactured by Power Test, Inc. allows reliable collection of engine fuel consumption information for use with your engine dynamometer system.
A wall mounted enclosure houses the fuel cells, heat exchanger, transfer pump, thermostatic control and proprietary measurement sensors for monitoring and conditioning fuel in either out-of- frame or in-frame engine test applications.
When combined with the PowerNet data acquisition and control package, the fuel measurement module is used to draw fuel from a bulk storage tank to the fuel cells, measure the specific gravity and temperature of the fuel, and provide automatic API correction. These features are critical to fuel measurement and engine power documentation.
- Integrated heat exchanger maintains fuel temperatures for consistent testing
- Wall-mounted enclosure
Fuel Storage Tanks
Power Test offers a variety of portable and fixed fuel storage tanks to allow for quick and efficient fueling and re-fueling. Fuel storage tanks are available from 10-1,000 gallons (37.8 - 3,780 liters), and can be equipped with retractable fuel pressure and return lines, and a fuel priming cabinet to ensure proper fuel supply at start-up.
Opacity Meters
Power Test's smoke opacity measurement systems allow monitoring of diesel exhaust systems to determine compliance with regulatory requirements for particulate emissions. The systems may also be used to determine fueling characteristics by observing changes in the density of the exhaust stream. The usage of sensors facilitate proper maintenance for improved fuel economy.
When interfaced with the PowerNet data acquisition and control package, the opacity meters output data and display them alongside engine information.
- Measure particulate emissions
- Determine fueling characteristics
- Accuracy within +/- 1%
- Available in both portable and fixed (shown) models
Recirculation Systems
Under Construction
Resilient Couplings
Dyno mounted resilient couplings have a spider-type inner hub that mounts to the dynamometer shaft. The outer spider is positioned over the hub with a neoprene resilient block placed between each finger of the 2 spider assemblies. The coupling is capable of transmitting a maximum of 2,500 lb. ft. of torque when driving through the blocks. By removing blocks in pairs, torque rate can be reduced to 66, 50 or 33 percent, which becomes important when testing extremely small engines on large dynamometers.
Both types of resilient couplings are effective at reducing torque spikes and torsional vibrations.
- Ideal for testing smaller engines on larger dynamometers
Room Exhaust Systems
The two most common types of room exhaust systems are Hood and Pipe systems.
Hood Systems are preferred because connection to the engine is not required. The hood fan pulls make-up air into the room and removes both engine and room exhaust.
Pipe Systems can be powered by a fan to remove engine exhaust. When using a pipe system, a separate fan-powered room air exhaust system is necessary to pull make-up air into the room and to discharge heat, smoke and fumes.
- Remove engine exhaust
- Ventilate room to remove heat, fumes, and smoke
- Provide air supply for engine combustion
Sub Bases
Our specially designed dynamometer sub bases provide a common mounting platform for the dynamometer, starting system, and load sensing strain gauge.
Constructed from heavy-gauge steel, our dynamometer sub bases eliminate the need for a raised concrete pad. Furthermore, our sub bases can be repositioned within a test cell to allow for expansion or the addition of additional dynamometer systems.
Contact a Power Test representative for information on custom sub bases and adapters to fit a Power Test dynamometer to an existing sub base.
Cooling Towers
A water recovery system should be considered if there is a limited capacity or excessive cost of the local water system (city or private), or if the local sewer system does not permit water temperatures of 77°C (170°F) or more. A water recovery system is in addition to a basic water system.
Fuel Measurements
The Gravimetric Chassis Dynos Fuel Measurement System manufactured by Power Test, Inc. allows reliable collection of engine fuel consumption information for use with your Chassis Dynamometer system.
A wall mounted enclosure houses the fuel cells, heat exchanger, transfer pump, thermostatic control and proprietary measurement sensors for monitoring and conditioning fuel in various test applications.
When combined with the PowerNet CD data acquisition and control package, the fuel measurement module is used to draw fuel from a bulk storage tank to the fuel cells, measure the specific gravity and temperature of the fuel, and provide automatic API correction. These features are critical to fuel measurement and engine power documentation.
- Integrated heat exchanger maintains fuel temperatures for consistent testing
- Maintain desired engine water during testing
- Wall-mounted enclosure
Optical Tachometers
The Power Test Optical Tachometer is used for monitoring engine speeds on vehicles not equipped with an ECM Communication Device.
Our optical tachometer features an alignment indicator light with on/off switch and a threaded mount to allow attachment to a standard tripod
- Allows digital speed acquisition for vehicles not equipped with an ECM
- Operational up to four feet away
- Lightweight, durable plastic housing
- Quickly attaches to a standard tripod
Recirculation Systems
Under Construction
Room Exhaust Systems
The two most common types of room exhaust systems are Hood and Pipe systems.
Hood Exhaust Systems are preferred because direct connection to the vehicle's exhaust system is not required. The hood fan pulls make-up air into the room and removes both engine and room exhaust.
Pipe Systems can be powered by a fan to remove engine exhaust. When using a pipe system, a separate fan-powered room air exhaust system is necessary to pull make-up air into the room and to discharge heat, smoke and fumes.
- Remove engine exhaust
- Ventilate room to remove heat, fumes, and smoke
- Provide air supply for engine combustion