APT | IR PUMP

Rotor Pump Design & Development

Internal meshing rotor pumps feature a compact structure, good reliability, and low cost, making it widely applicable in various lubrication and hydraulic scenarios. APT's proprietary technology allows for the customization of higher performance and reliability, as well as solutions with lower vibration, noise, and power consumption tailored to specific customer applications.

APT Profile Technology

As the core components of the rotor pump, the coupling characteristics of the inner and outer rotors profile determine the critical performance aspects such as efficiency, cavitation, and NVH. The profile technology of APT breaks through the mathematical barriers of traditional profile solving and achieves more efficient optimization and innovation of rotor profiles:

Oil Distribution Plate & Poting Technology

The high and low-pressure distribution grooves and other fluid domain features of the rotor pump determine its cavitation characteristics, pressure pulsations, vibration, and noise, among other input and output performance factors. APT's proprietary technology and optimized design enable the oil pump to operate stably and reliably under challenging conditions, including high altitude (inlet absolute pressure 0.15 bar) and high speed (15,000 RPM).

Smart controllable output

In accordance with specific technical requirements, single-stage, double-stages or continuously variable pressure output can be achieved with specific control valves or valve groups. Compared with variable displacement vane pumps, variable pressure output rotor pumps represent a more economical and energy-efficient solution for emission reduction.

High Pressure Rotor Pump Solution

Depending on the specific working conditions and technical requirements, APT offers a variety of high-pressure rotor pump solutions which can achieve a maximum output pressure of 5MPa (volume efficiency is not less than 85%).

Crescent Pump Design & Development

The internal meshing crescent pump features a more stable internal sealing structure, allowing for higher operating pressure (below 4 MPa) and volumetric efficiency compared to rotor pumps. It is typically employed in medium and low-pressure hydraulic applications, such as automatic transmissions, machine equipments, and hydraulic drives for construction machinery.

APT Profile Technology:

The traditional crescent pump rotor adopts an involute tooth profile, which is easy to manufacture but exhibits lower space efficiency and limited optimization possibilities. APT's technology, based on innovative profile algorithms, has developed various new crescent pump profiles. These effectively achieve multi-parameter optimization for driving characters, sealing characteristics, and lubrication properties. Click for details:

Involute Gear Profile

Comp-Cir Profile

Comp-Con Profile

Oil Distribution Plate & Poting

The high and low-pressure oil slots, crescent plates, and other fluid domain features of the crescent pump determine the pump's suction characteristics, pressure pulsations, cavitation characteristics, vibration, and noise performance. APT's proprietary technology and optimized design enable the oil pump to operate stably under conditions of high suction damping or high altitude without experiencing cavitation damage.

High Pressure Crescent Pump

Depending on specific working conditions and technical requirements, APT offers a range of high-pressure crescent pump solutions which can achieve a maximum output pressure of 15MPa (volume efficiency is not less than 85%).

Variable Disp. Rotor Pump Design & Develop

Variable displacement rotor pumps adjust the related position between the rotor set and the distributor plate to alter the pump's output flow, aligning with the dynamic requirements of the system and achieving reduced power consumption (typically in the range of 3%-5%). APT possesses proprietary expertise in the design and simulation of a series of variable mechanisms, delivering customers more precise control over adjustments and higher efficiency, along with increased reliability.

APT Profile Technology

APT's profile algorithms and software can parametrically solve and automatically design various variable mechanisms' meshing profiles. They facilitate running and performance simulations of product assemblies, helping to overcome technical barriers and enhance development efficiency. Variable mechanisms that can be solved/automatically designed include the following types:

Profile of VDRP with Tooth Engage

Profile of VDRP with Guide Slot

The software integrated with APT proprietary technology is also capable of conducting energy-saving calculations and benchmark analyses tailored to specific designs.

Oil Distribution Plate & Poting

APT's variable displacement rotor pump groove design is optimized for the practical conditions of variable mechanisms, perfectly addressing issues such as sealing, oil entrapment, cavitation, and NVH during the operation of the variable mechanisms.

Smart Controllable Output

Tailored to specific technical requirements, the integration of specific control valves or valve assemblies can achieve single-stage, double-stage, or continuously variable pressure output, precisely and quantifiably meeting the system's demands. Compared to variable displacement vane pumps, the variable pressure output rotary pump represents a more economical solution.

Add :	No5-1 Taihu Road, Xinbei District, Changzhou, Jiangsu, 213033, PRC
Tel :	+86 0519-81697236	Email :	apt-technology@msn.com