KEY FEATURES

DIGITALLY CONTROLLED
Our state-of-the-art digital hydraulic variable displacement piston pump is designed for precision and efficiency, making it a perfect fit for vehicle electrification. With advanced digital controls, it optimizes performance in real-time, ensuring seamless integration into electric vehicles and other modern applications. This pump offers superior energy efficiency, reliability, and adaptability, catering to the demands of cutting-edge technology.

START-UP PUMP IN "SAFE" MODE
Hydraulic systems can face challenges like occasional sticking of valves in the 'open to flow' position, often caused by factors such as oil contamination or sub-zero temperatures. Additionally, control valves may unintentionally shift, leading to unexpected fluid flow and potential consequences such as unintended component activation, system pressure spikes, downtime, and more. The Tonand pump addresses these issues by allowing you to set it at 'no outlet flow' during the startup of the prime mover, effectively preventing unintended consequences. When operations are required, the pump can be smoothly switched to 'flow-on' mode, providing an added layer of safety for operators, machinery, equipment, and property. This safety feature is easily controlled with a simple flip of a switch. With the Tonand pump's 'SAFE' mode, you can ensure safer and more reliable hydraulic system operation, safeguarding both personnel and equipment from potential risks.

LOAD SENSING
The Tonand pump incorporates a revolutionary Load Sensing system that departs from conventional variable displacement piston pump methods. Instead of adjusting piston stroke, it ingeniously regulates flow by manipulating the number of active piston groups. This innovative approach to variable displacement eliminates the need for components like swash plates and rotary valves. What sets this system apart is its unique method of piston group deactivation, which allows for the reduction of flow without introducing flow pulses or causing fluid hammering. This feature eliminates the necessity for hydraulic buffers or spike dampeners. One noteworthy advantage for Original Equipment Manufacturers (OEM) is the opportunity to manufacture and introduce a pump that distinguishes itself in the market, providing a competitive edge. The Tonand pump's cutting-edge technology and the elimination of traditional components make it a standout choice for those seeking innovation and efficiency in hydraulic systems.

CASE DRAIN RECOVERY
Most variable displacement hydraulic pumps are designed to incorporate internal leakage, primarily to lubricate components susceptible to wear and tear. This design feature is crucial, as without this intentional leakage, pumps risk seizing, potentially leading to catastrophic failure. However, the downside to this intentional leakage, manifesting as case drain volume, is its direct correlation to the inefficiency of the pump. Effectively, case drain becomes wasted energy, impacting overall system efficiency. The Tonand system represents a groundbreaking solution for case drain recovery, effectively recovering energy that would otherwise be wasted. This is achieved through an innovative and efficient mechanism. The internal structure has been optimized to eliminate all potential leaks, barring the essential pistons blow-by. The reclaimed case volume opens up numerous possibilities for applications. It can be seamlessly integrated into the primary outlet flow or utilized for auxiliary functions, such as powering cooling fans and other components. This integration plays a crucial role in restoring overall system efficiency. One remarkable characteristic of the Tonand system is its ability to operate without raising housing pressure above the constant ambient level of 14.7 PSI.

SINGLE OR MULTIPLE OUTLETS
The Tonand pump incorporates an advanced system of pistons and bores, enabling the provision of individual or single outlet ports. The total number of ports is determined by the sets of pistons per bank. For example, a pump with 2 banks, each containing 2 nested pistons (a set), and 6 sets per bank, will yield a total of 4 ports. It is also possible to create a single port by connecting all outlet ports. In addition, volume from each outlet can work into different head pressures than others.

ENERGY RECOVERY SYSTEM
In the realm of pump development, Tonand has consistently placed emphasis on several key factors: efficiency, cost-effectiveness, uniqueness, and durability. A pivotal contributor to achieving these objectives is the innovative Energy Recovery System (ERS), which diverges significantly from conventional approaches. The proposed ERS seamlessly integrates into the Tonand pump, enabling direct and unobstructed kinetic energy recovery while minimizing the reliance on many current traditional ERS components. The recovered kinetic energy drives a small turbine positioned on the main shaft within the pump. This turbine plays a crucial role in assisting with rotations of the input shaft, effectively reducing the energy demand on the prime mover. To ensure optimal extraction of kinetic energy, Tonand has meticulously optimized tolerances and clearances between moving and non-moving parts down to the low thousandths of an inch. A clutch bearing is used to allow the shaft to overrun the turbine.

NOISE REDUCTION
Due to their particular design, axial piston pumps generate considerable noise. The pulsating displacement of the hydraulic fluid, and the related alternating and widely fluctuating internal pump forces, result in housing vibrations that ultimately transmits to the entire machine. This causes a high noise level in the application. Although sound insulation can be added as a secondary measure, that is always associated with extra work, the need for a larger installation space, and additional costs. In industrial settings this is sometimes unavoidable, but it is almost unthinkable in the mobile-hydraulics sector due to the limited space availability. When hydraulic pumps are connected to a Diesel or any internal combustion engine as the prime mover, the issue of physical pulsations often goes unnoticed, however, this dynamic changes significantly in applications involving quiet electric motors. In such cases, the typically loud noise generated becomes not only noticeable but also highly undesirable to end users. They demand minimal noise emission across a wide range of speeds and pressures. Tonand has successfully addressed this challenge with a hydraulic pump that consistently delivers exceptional noise control, surpassing existing industry standards. This advantage becomes most apparent during the "ramp-up and ramp-down" phases. One key factor contributing to the pump's remarkable noise control is the elimination of traditional components such as the swash plate and all its related parts.

INDIVIDUAL CYLINDER CONDITIONS ANALYSIS
The Tonand pump features a sophisticated internal system designed to effortlessly monitor the operating conditions of each cylinder in real-time. This capability allows for prompt responses to avert any potential impending major failures. The monitoring system also supports the integration of an Alert System, complete with visual and audible alerts. This distinctive feature offers a significant competitive edge for Original Equipment Manufacturers (OEMs), setting their products apart from competitors and elevating their overall sales appeal.

CHARGE PUMP AND DYNAMIC ANALYSIS
The charge pump serves the exclusive purpose of supplying all intake volume to the main pistons/cylinders. Typically set between 150-300± PSI, the charge pump's operating pressure is crucial. Its strategically positioned external location facilitates rapid access for conducting flow conditions analysis. This strategic placement aims to proactively prevent unnecessary removal and disassembly of the main pump, thereby saving time and reducing costs for the end user.

DISPLACEMENT LIMITER
The flow limiter's effectiveness stems from its distinctive interlocking or nested piston system design. The system enables substantial alternatives to the outlet flow while maintaining pressure. Users can select a wide range of flow rates, spanning from maximum outlet flow to less than 5% and everywhere in between. This innovative flow limiter offers a valuable solution for applications requiring fluid power. It presents a significant advantage for industrial and commercial fluid power systems, offering the potential to replace variable frequency drives (VFDs) used by electric motors for RPM control and, consequently, pump flow. Let us use the example of a 10-cylinder pump operating at 1800 RPM with a maximum displacement of 30 GPM. With the limiter in place, the flow can be reduced as low as 1 GPM or even less, without dropping RPM. This drop in flow provides the desired drop in work-speeds while holding pressure.

FIXED DISPLACEMENT MODE
Internal pump configurations make it possible for the load sensing circuit to be deactivated, virtually allowing the pump to operate in fixed displacement mode at maximum flow and pressure. This takes a simple ON-OFF switch. At all times, the pump can be shielded against excessive pressure.