Saenz Engine Dynos are designed for professional testing. Since 1974 we have been manufacturing hydraulic brakes with great control, reliable and low maintenance. Equipped with a data acquisition system with automatic control of RPM and motor torque that performs tests with maximum precision, sensitivity and repeatability.
AT, XT and HT dynamometers are based on the same hydraulic brake design principle where each line has adequate dimensions to cover different rotation speed ranges.
All our water brakes work in both directions of rotation and are built with a symmetrical thru-axle that allows either end of the dynamometer to be driven and starting systems used on the equipment itself. Water inlet control allows very low minimum loads to be applied for low torque and high speed testing. This method of control using electrically actuated valves allows precise control under all conditions encountered in engine testing.
All the devices that complete a dynamometer with these characteristics are also offered, such as: engine carriages, starting systems, cardan drive shafts, elastic torsional couplings, engine adapters, cooling and water recirculation systems, external aftercooler systems, fuel measurement systems, standard sensors and those adapted to particular needs.
Saenz offers complete solutions for engine testing, this includes the full range of accessories for test rooms including mobile engine bases, starting systems, cardan shafts, elastic couplings, engine adapters, cooling and water recirculation systems, fuel measurement systems and all types of sensors.
SMAC is a high-tech data acquisition and control system developed from our long experience working with industrial application dynamometers. Based on a robust and modular PLC, the system acquires the readings of the different installed sensors without limit quantity. The system controls both the operation of the dynamometer and all the auxiliary elements of the installation, acting on any deviation to ensure the safety of operators and equipment.
The Windows®-based operating software offers flexibility to generate different test protocols that the system executes autonomously. This system provides the operator with a reliable, efficient and accurate tool to control test conditions, while providing quick information in an easy-to-interpret visual format.
Wheeled frame allows the engine to be mounted outside the test cell and easily transported and docked to the dynamometer. Different sizes are available: for 2000, 3000, 9000, 13.000 and up to 20.000kg engines. All karts have SAE Engine Flywheel Housing to mount the engines: #6, #5, #4, #3, #2, #1, #1/2, #0 and #00.
For dyno command, done with stainless steel board and contains all the commands of the test bench environment, the accelerator and the brake load control. With a 24'' LED monitor incorporated to operate the SMAC acquisition and control software.
- Allows to regulate the engine temperature and maintain stable conditions to achieve repetitive measurements.
- Engine water circuit pressure adjustment system.
- Includes a sight glass for detecting leaks
- Analog pressure and temperature clocks for quick check inside the dyno room
- Mobile base
Driveshaft allows to couple a large variety of engines to the dyno brake, allowing misalignment between the engine and the dynamometer. The shaft is mounted inside a guard that contains it in the event of a failure, minimizing risk for people and the rest of the equipment in the test cell.
The resilient coupling reduces the transmission of high amplitude torsional vibrations during testing. Helps protect and extend the life of the drive shaft.
There are different criteria to define the ventilation system in an engine room. A widely used system is the exhaust hood. Made of steel, the size and amount of fans are defined according to the tested engines.
Cooling towers extract heat from the dynamometer water circuit generated by the delivered mechanical power and engine cooling systems. The heat is transferred from the water in the circuit to the air, the size of the cooling tower depends on the power of the engines to be tested and is calculated for the maximum capacity of the dynamometer brake.
Fuel consumption is a very important issue of high torque Diesel engines performance and is highly required in repair or overhaul reports. The system works in a serial connection between the main fuel tank (s) and the engine. It has an intermediate tank and two circuits, one for the motor supply and the other for the fuel return circuit. Measurement is gravimetric and is automatically controlled by the system during tests.
The system eliminate the need for batteries, cables and chargers to run the engines starter. Also, it is frequent that some engines are mounted on the dynamometer without its own starting system.
The dyno starter allows to start the engines by just pushing a button. For engines up to 1000hp the system includes an electric motor, for larger engines the system includes a pneumatic motor with a crown on the dynamometric brake.
The throttle actuator allows for the automation and precise operation of mechanical engine throttles. The actuator's stroke and speed are fully adjustable, allowing it to easily adapt to different devices.
Control valve allows remote torque control actuation to prevent the plumbing circuit from passing through the dynamometer command desk. The valve is automatable with the integral automatic control system of AT and HT dynamometers. The valve sizes vary according to the dynamometer model.
Machinery engines that are disassembled for repair or overhaul frequently do not bring the intercooler system to the dynamometer. This is why the simulator is used to cool the air at the turbo outlet. The system is air-water, with automatic control of air outlet temperature.
For engines that cool the turbo outlet with a water circuit, a heat exchanger is used to control the temperature of that circuit. The system is automatable and uses fresh water from the general dynamometer circuit.
