Регулируемый насос строительной техники Danfoss (дорожный каток)

Danfoss variable displacement piston pumps deliver unmatched performance in road roller applications, combining efficiency, precision, durability, and smart integration to optimize compaction operations. Below are their key advantages tailored for construction machinery:

### 1. Unrivaled Efficiency & Energy Savings

- **Digital Displacement® Technology**: Unique radial pump design enables individual piston activation for **up to 30% energy savings** vs. traditional pumps, reducing fuel consumption in long-duration compaction projects

- **Load Sensing Control**: Maintains constant pressure margin by adjusting swashplate angle, eliminating flow waste when demand fluctuates

- **Angled Piston Bores & Spherical Valve Plates**: Minimize internal leakage and friction for peak volumetric and mechanical efficiency

- **Integral Boost Pumps**: Improve suction capability, allowing higher input speeds and tolerance for adverse inlet conditions, maximizing power density

### 2. Precision Control for Optimal Compaction

- **Multiple Control Options**:

  - Pressure compensation for stable flow under varying loads

  - Load sensing for energy-efficient flow matching

  - TPSN power control to prevent engine stall

  - Electronic Displacement Control (EDC) with manual override for precise speed regulation

- **Fast Response Times**: Swashplate mechanism adjusts displacement in milliseconds, ensuring immediate adaptation to changing terrain and compaction requirements

- **Constant Speed Maintenance**: Precise flow control enables road rollers to maintain uniform compaction speeds, improving asphalt/soil density consistency

- **Vibration System Optimization**: Real-time displacement adjustment controls drum frequency and amplitude for different material types (asphalt, concrete, soil)

### 3. Exceptional Durability & Reliability

- **Robust Rotating Group**: 9-piston design with roller cradle bearings for **field failure rates <0.07%** in harsh construction environments

- **Single-Piece Housing**: Minimizes leak points and enhances structural integrity under high vibration conditions

- **High-Pressure Capability**:

  - 90 Series: Max working pressure **430 bar (6250 psi)**, peak **500 bar (7250 psi)**

  - D1P Series: Max working pressure **350 bar (5,076 psi)** for large-tonnage rollers

- **Boundary Filtration**: 6-channel gap filtration protects control valves from contamination, preventing spool sticking in dusty job sites

- **Roller Cradle Bearings**: Distribute loads evenly for extended service life in high-shock compaction operations

### 4. Compact Design & Easy Integration

- **High Power Density**: D1P 160 cm³ model offers **best-in-class power-to-size ratio**, saving valuable space in roller engine compartments

- **Multiple Mounting Options**: SAE C/D flanges and various shaft configurations for seamless integration with different roller power systems

- **Flexible Port Configurations**: Same-sided or opposed system ports to optimize hydraulic circuit layout

- **100% Through-Drive Capability**: Supports tandem mounting with gear pumps for multi-function hydraulic systems (steering + vibration + propulsion)

- **PLUS+1® Compliant Controls**: Simplify integration with telematics for remote monitoring and predictive maintenance

### 5. Enhanced Safety & Serviceability

- **Destroke Solenoid Valves**: Rapidly reduce displacement to zero during emergencies (operator absence, E-stop), protecting equipment and personnel

- **Built-in Bypass Valves**: Facilitate cross-porting and towing operations for easier maintenance

- **Manual Override Function**: EDC controls include manual backup for diagnostics and emergency operation

- **Global Service Network**: Comprehensive technical support and spare parts availability ensure minimal downtime in global construction projects

- **Long Warranty Coverage**: MPV Series offers 1-year warranty; other series provide extended protection for heavy-duty use

### 6. Application-Specific Optimization

- **Walking System**: Smooth start/stop/acceleration with precise flow control for consistent speed during compaction

- **Vibration System**: High-pressure output ensures sufficient drum force while variable displacement matches energy to material requirements

- **Steering System**: Fast response enables agile maneuvering in narrow construction zones

- **Large-Tonnage Compatibility**: D1P Series handles displacements up to **260 cm³/rev** for heavy rollers requiring high flow rates

## Why Danfoss Stands Out for Road Rollers

Danfoss combines decades of hydraulic expertise with construction-specific engineering to address the unique challenges of road compaction:

| Advantage | Road Roller Benefit |

|-----------|---------------------|

| Energy Efficiency | Reduced operating costs over machine lifetime |

| Precision Control | Consistent compaction quality, fewer reworks |

| Durability | Extended service intervals, lower maintenance |

| Compact Design | More space for other components, better weight distribution |

| Smart Integration | Future-proof compatibility with electrified/automated systems |

These advantages make Danfoss variable displacement piston pumps the preferred choice for leading road roller manufacturers worldwide, ensuring optimal performance, reliability, and total cost of ownership.

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