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Overview of the Mercedes OM647 R5 Engine
The Mercedes OM647 R5 engine is a robust and versatile powerplant that has garnered attention for its performance and reliability. This engine, part of Mercedes-Benz’s extensive lineup, is a 2.7-liter turbocharged inline-five diesel engine. It was designed to meet the demands of both the passenger car and commercial vehicle markets, showcasing a blend of efficiency and power that is characteristic of Mercedes engineering.
With a design philosophy focused on durability and performance, the OM647 R5 engine features a cast iron block, aluminum cylinder head, and a DOHC (Dual Overhead Camshaft) layout. This combination not only enhances the engine’s structural integrity but also contributes to its overall efficiency. The turbocharging system allows for increased power output while maintaining lower fuel consumption, making it a popular choice for those seeking a balance between performance and economy.
Applications in Various Models
The OM647 R5 engine has been utilized in a range of vehicles, showcasing its versatility across different segments. Here are some notable models that have incorporated this engine:
- Mercedes-Benz Sprinter: This commercial van has benefited from the engine’s torque delivery, making it suitable for heavy loads and long-distance travel.
- Mercedes-Benz Vito: A popular choice for businesses, the Vito leverages the OM647’s efficiency and reliability for urban and rural transport.
- Mercedes-Benz C-Class (W203): In this compact executive car, the engine provides a spirited drive while maintaining commendable fuel economy.
- Mercedes-Benz E-Class (W211): The OM647 R5 engine enhances the E-Class’s reputation for comfort and performance, making it a preferred choice for luxury sedan enthusiasts.
- Chrysler 300C: In some markets, this American sedan has been equipped with the OM647, offering a unique combination of luxury and diesel efficiency.
The engine’s widespread application across both passenger and commercial vehicles underscores its adaptability and reliability. It has been particularly favored in markets where diesel engines are preferred for their torque characteristics and fuel efficiency. The OM647 R5 engine not only meets the expectations of performance but also aligns with the growing emphasis on environmental responsibility, thanks to its relatively low emissions for a diesel engine of its class.
In summary, the Mercedes OM647 R5 engine stands out as a testament to the brand’s commitment to quality engineering, making it a significant player in the diesel engine market. Its deployment across various models illustrates its capability to meet diverse driving needs, from urban commuting to heavy-duty performance.
Specifications of the Mercedes OM647 R5 Engine
The Mercedes OM647 R5 engine is known for its robust engineering and impressive performance metrics. Below, we delve into the key specifications that define this engine, highlighting its capabilities and features that make it a popular choice in various Mercedes-Benz models.
Engine Specifications
| Specification | Details |
|---|---|
| Engine Type | Inline 5-cylinder diesel |
| Displacement | 2.7 liters (2,698 cc) |
| Max Power Output | 150 hp (110 kW) at 4,000 rpm |
| Max Torque | 330 Nm (243 lb-ft) at 1,800-2,400 rpm |
| Compression Ratio | 18.5:1 |
| Fuel System | Common Rail Direct Injection |
| Turbocharger | Variable Geometry Turbocharger |
| Cooling System | Water-cooled |
| Weight | Approximately 180 kg (397 lbs) |
Oil Capacity and Recommendations
When it comes to maintaining the performance of the OM647 R5 engine, proper oil management is crucial. Here are the specifications related to oil capacity and recommendations:
| Specification | Details |
|---|---|
| Oil Capacity (with filter) | 8.5 liters (9.0 quarts) |
| Oil Type | Fully Synthetic 5W-30 or 5W-40 |
| Oil Change Interval | Every 10,000 km (6,200 miles) or annually |
The specifications of the OM647 R5 engine reflect a well-rounded diesel engine that balances power, efficiency, and durability. Its application of advanced technologies, such as the common rail direct injection system and variable geometry turbocharger, ensures that it meets both performance and environmental standards. Proper maintenance, especially regarding oil type and capacity, is essential for sustaining its longevity and performance.
Common Problems and Reliability of the Mercedes OM647 R5 Engine
The Mercedes OM647 R5 engine, while generally regarded as a reliable powerplant, is not without its issues. Understanding these common problems can help owners and potential buyers make informed decisions regarding maintenance and usage. Below, we explore the typical issues associated with this engine and discuss its overall reliability.
Common Problems
Despite its robust design, the OM647 R5 engine has been known to encounter several issues over time. Here are some of the most frequently reported problems:
- Injector Issues: Fuel injectors can become clogged or fail, leading to poor engine performance, rough idling, and increased fuel consumption.
- Turbocharger Failures: The variable geometry turbocharger can suffer from wear and tear, resulting in reduced power output and turbo lag.
- Oil Leaks: Common sources of oil leaks include the oil pan gasket and valve cover gasket, which can lead to decreased oil levels and potential engine damage if not addressed promptly.
- Cooling System Problems: Issues such as thermostat failure or water pump leaks can lead to overheating, which can severely impact engine longevity.
- Timing Chain Stretch: Over time, the timing chain may stretch, affecting engine timing and causing performance issues. This can lead to costly repairs if not caught early.
Symptoms of Problems
It’s essential to be aware of the symptoms that may indicate a problem with the OM647 R5 engine. Common signs include:
- Decreased power and acceleration
- Unusual engine noises, such as knocking or rattling
- Increased exhaust smoke, particularly blue or black smoke
- Warning lights on the dashboard, particularly the check engine light
- Leaking fluids underneath the vehicle
Reliability Factors
When it comes to reliability, the OM647 R5 engine has a solid reputation, largely due to its engineering and construction. Key factors contributing to its reliability include:
- Durable Construction: The use of high-quality materials, such as a cast iron block and aluminum cylinder head, enhances the engine’s durability.
- Maintenance Practices: Regular maintenance, including timely oil changes and addressing minor issues before they escalate, plays a significant role in the engine’s longevity.
- Proven Technology: The engine incorporates tried-and-true technologies, such as the common rail fuel injection system, which have been refined over the years for reliability.
- Owner Experience: Many owners report high satisfaction levels with the engine’s performance when properly maintained, highlighting its potential for long-term reliability.
In summary, while the Mercedes OM647 R5 engine is generally reliable, it is essential to be aware of its common problems and symptoms. Regular maintenance and prompt attention to issues can help ensure that this engine continues to perform well over the years.