Yanmar 4JHE Specs: A Comprehensive Overview
Introduction
The Yanmar 4JHE is a robust marine diesel engine known for its reliability and efficiency. Whether you’re a boat enthusiast or a professional in the marine industry, understanding the specifications of this engine is essential. In this article, we will delve into the detailed specifications of the Yanmar 4JHE, covering various aspects such as power output, dimensions, fuel consumption, and more.
Engine Specifications
Let’s start by exploring the key specifications of the Yanmar 4JHE engine. The table below provides an overview of the engine’s specifications:
| Engine Model | Yanmar 4JHE |
| Number of Cylinders | 4 |
| Displacement | 1.995 liters (121.7 cubic inches) |
| Bore and Stroke | 84 mm x 90 mm (3.31 inches x 3.54 inches) |
| Compression Ratio | 23.5:1 |
| Aspiration | Naturally aspirated |
| Max Power Output | 53 horsepower (39.5 kilowatts) |
| Max Torque | 116 Nm (85.6 ft-lbs) |
Dimensions and Weight
The physical dimensions and weight of the Yanmar 4JHE engine are crucial considerations for installation and overall performance. Here are the specifications:
| Length | 671 mm (26.4 inches) |
| Width | 500 mm (19.7 inches) |
| Height | 640 mm (25.2 inches) |
| Weight | 180 kg (397 lbs) |
Fuel System and Consumption
Efficient fuel consumption is a vital aspect of any marine engine. The Yanmar 4JHE engine offers impressive fuel efficiency while delivering reliable power. Here are the fuel system specifications:
| Fuel Type | Diesel |
| Fuel Injection | Direct injection |
| Fuel Consumption | Approximately 5.7 liters per hour (1.5 gallons per hour) |
Additional Specifications
Apart from the core specifications mentioned above, here are some additional details that may be of interest:
- Electrical System: 12V
- Cooling System: Freshwater cooling with heat exchanger
- Lubrication System: Forced lubrication with trochoid pump
- Starting System: Electric start
- Alternator Output: 12V, 80 amps
- Rotation: Counterclockwise (viewed from the flywheel side)
Conclusion
The Yanmar 4JHE engine is a reliable and efficient marine diesel engine that offers impressive power output and fuel efficiency. With its compact dimensions and manageable weight, it is suitable for a range of marine applications. Understanding the detailed specifications of the Yanmar 4JHE is crucial for making informed decisions regarding installation, maintenance, and overall performance.
