Yuchai YC4D Series Marine Engines

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Yuchai YC4D Series Marine Engines

· High performance combustion chamber and intake swirl contribute to lower fuel consumption

· Yuchai sealing technology in piston ring and valve oil seal reduces the lube oil consumption

· High fuel efficiency and low maintenance cost

· Compact size facilitates installation, maintenance and repair

· Operator and nature friendly with low noise, rapid start ability and low emissions

· Major overhaul period is more than 10000 hours

· Good for medium size cargo ships and fishing vessels

YC4D TECHNICAL SPECIFICATIONS

Model	YC4108C	YC4108CA	YC4108ZC	YC4D75C
Configuration	Vertical in-line, 4-cylinder, 4-stroke, direct injection, water-cooled
Bore ×Stroke (mm)	108 ×115
Aspiration	Natural		Turbocharged & inter-cooled
Displacement (L)	4.21
Compression ration	17:01
Rated power/Speed (kW(hp)/r/min)	40(54)/1500	32(43.5)/1500	50(68)/1500	55(75)/1800
Fuel consumption g/(kW·h)	≤200		≤198
Oil consumption g/(kW·h)	≤0.8
Rotation	Counterclockwise ( facing flywheel )
Starting method	Electric
Dry weight (kg)	370		390
Engine dimension (L×W×H) (mm)	986 × 730 × 948		1311 × 746 × 962
Certificate	ZC, ZY, CCS

Q: How does the engine start?: When a stroke is near the end of the compression stroke, in under the action of high pressure oil pump, diesel oil to about 10MPa by high pressure injector into the cylinder combustion chamber, in a very short period of time is mixed with the air immediately after self ignition combustion. The pressure of the gas in the cylinder rises rapidly, up to 5000~9 000kPa, and the maximum temperature is 1800~2 000K. Because the diesel engine is ignited by compression, it is called a compression ignition engine.

Q: What kind of engine is oil efficient?: The engine parameters -- generally the same engine cylinder number, full combustion is more efficient; and the four valve engine will be more than two valve more fuel-efficient, DOHC engine fuel-efficient than single overhead. In addition, the engine of a good linear - power increased evenly, the maximum torque appeared early, the car will be more fuel-efficient.

Q: How much engine oil pressure is normal?: 3, oil consumption is too much, the normal engine oil consumption and gasoline ratio is 0.5%-1%, if more than 1% is not normal. The reason for excessive oil consumption is that, in addition to the oil leakage, more oil is burned. The main reason is that the piston and the cylinder wall clearance is too large; piston ring wear or lack of elasticity; the valve guide wear too much damage to the valve stem seal. The SNAP engine super repairing agent can greatly improve the tightness of the piston ring, repair the worn internal parts, and reduce the consumption of the oil.

Q: Engine arrangement...: 2.V type, that is, the cylinder is divided into two groups, alternating installation on the same crankshaft, but two of an angle (more than 90 degrees or 70 degrees). The utility model has the advantages of compact volume and little vibration.

Q: How about all the engine.: Gasoline is now used MITSUBISHI engines, technology has been very mature, it is worth the letter lazy! The diesel engine used in Italy, VM, is a very successful engine, once used in the Land Rover guards.

Q: Now, is the Thai engine MITSUBISHI?: MITSUBISHI brought technology into China, both relatively early, without the most advanced technology, the original "4G1" series and "Dongan" production, the "4G6" series and Shenyang branch of space production. The MITSUBISHI engine's China trip takes root on these two bases.

Q: Is the engine oil burning normal?: Turbo engine tips: 1. after the start, not anxious to step on the accelerator pedal, should be idle for three minutes, the turbocharger get sufficient lubrication; 2. engine long time high-speed operation, can not immediately shut down; 3. choice of oil, in addition to the provisions of the best use of original oil, also can use synthetic oil, synthetic oil of high quality lube oil; 4. engine oil and filter to keep clean, to prevent impurities entering; 5. often check the sealing ring of the turbocharger is sealed; 6. periodic inspection of the turbocharger has no vibration or noise, preventing oil leakage

Q: The car's engine trouble light is on. What should I do about it?: 2, fuel quality is not good, many found that the engine fault lights on the car has a feeling: that is added to a tank of oil, engine fault light suddenly lit. Because the engine for oil quality indicators are required, especially with the increasing demand for engine specifications everywhere, then the quality of the oil index is also demanding higher and higher. In real life, after all, there are some gas stations can not fully meet the specifications to meet the high performance engine fuel, which led to the engine fault lights occur.

Q: What about the engine material, iron and aluminum, please?: What materials and technologies are used in an engine are obtained by considering the market position, technical strength, production cost and other factors.

Q: Why some engine exhaust pipe in front, some are in the back! What are the advantages and disadvantages: The location of the exhaust exchange, the intake manifold placed in the front, exhaust manifold placed in the rear, into a "forward and backward", is the so-called "anti-set" the.

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