Overview

Weichai 3L new generation engine product; The power coverage is 75-103kW, meeting the requirements of National Emission Standard V and suitable for 6-7.5m buses.

rated power

Company:American metric system

maximum power	140 hp103 kW
minimum power	102 hp75 kW
Maximum torque speed	430/（1200-2200） N.m / r/min

emission standard

National V

routine

Product Series	WP3.7
fuel	diesel
engine type	Inline 4-cylinder, four stroke engine
Cylinders	4
Number of valves	2
bore	102 mm
itinerary	112 mm
displacement	3.66 L
Air intake method	turbocharged intercooled
compression ratio	17:1
combustion system	Electric controlled high-pressure common rail

Engine size (approximate final size depends on optional components)

length	953 mm
width	661 mm
height	789 mm
G weight	340 kg

Note: Product parameters and images are for reference only; If there are any changes, no further notice will be given.

high reliability

The engine has a high degree of reinforcement, with the body, cylinder head, connecting rod, crankshaft, etc. all reinforced. The body reinforcement plate has been added to meet the demand for 16MPa burst pressure
B10 lifespan of 800000 kilometers/12000 hours
Optimize the friction pair, oil pump, and oil cooler, increase oil pressure, reduce oil temperature, reduce friction loss by 2-3%, increase oil pump flow by 15%, increase oil pressure to above 350kPa, and reduce oil temperature by below 110 ℃

Excellent NVH performance

Adopting the body frame plate, the vibration is small and the vibration noise is greatly reduced
Adopting a 7-level precision helical gear for stable operation and further reducing mechanical noise
Multiple injection technology significantly reduces combustion noise
Adopting silicone oil clutch fan and top mounted soundproof cover further reduces noise

Ultra low fuel consumption

The fuel consumption rate of the main body is low, with a minimum fuel consumption rate of 205g/kW • h, which is 5g/kW • h lower than its competitors
The economic fuel consumption range is large, increasing to 1100rpm~2400rpm

Powerful

On the premise of ensuring power, a smaller rear axle speed ratio can be chosen to further reduce fuel consumption

Adaptable

At an altitude of 2800 meters, there is no power reduction, and at 4500 meters, there is ultra-low power loss under common operating conditions
Zero startup failure at -20 ℃ in low-temperature environment

Good adaptability

Small in size and light in weight, it is the ideal power source for buses ranging from 6 to 7.5 meters in length
The main air conditioning system is equipped with a structure that does not directly contact the vehicle frame, further enhancing the vehicle's NVH performance and improving overall quality
Can be equipped with a large displacement 330cc air conditioner to meet the cooling needs of the entire vehicle; The condition of the front and rear oil pan meets the requirements of the vehicle layout

model	Rated power/speed （kW/rpm）	Maximum torque/speed （N.m/rpm）	displacement （L）	emission standard	technical route	Compatible Models
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