Overview

Weichai Rui Power is a cutting-edge product with advantages such as low noise and good vibration reduction effect; The power coverage is 103-120kW, meeting the requirements of National Emission Standard V, and suitable for traditional buses within 7 meters and hybrid buses within 8.5m.

rated power

Company:American metric system

maximum power	165 hp120 kW
minimum power	140 hp103 kW
Maximum torque speed	560/（1200-1800） N.m / r/min

emission standard

National V

routine

Product Series	WP4.1
fuel	diesel
engine type	Inline 4-cylinder, four stroke engine
Cylinders	4
Number of valves	2
bore	105 mm
itinerary	118 mm
displacement	4.1 L
Air intake method	turbocharged intercooled
compression ratio	17.5:1
combustion system	Electric controlled high-pressure common rail

Engine size (approximate final size depends on optional components)

length	970 mm
width	700 mm
height	798 mm
G weight	400 kg

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

high reliability

Durable and sturdy: Developed according to the design concept of heavy-duty engines, with reliable characteristics; B10 has a lifespan of 800000 kilometers

modular design

Strong universality: WP4.1 and WP3.7 components have strong universality, with universal structure and installation interfaces, and easy maintenance
Good adaptability: multi generator structure, equipped with 430cc air conditioning, convenient for vehicle layout

lightweight design

The total weight of the machine is only 400kg (National V) - with powerful CAE analysis capabilities, optimized design is carried out while ensuring strength and reliability
Plastic and aluminum alloy materials are extensively used in positions such as flywheel housing, water pump, oil pan, rocker arm cover, and intake pipe

Excellent NVH performance

Body strengthening plate, silicone oil clutch fan, high-precision gear, combustion optimization, further reducing engine noise and vibration

Ultra low fuel consumption

The minimum fuel consumption is 196g/kW • h, which is 2-3g/kW • h lower than competitors
Expand the fuel saving speed range to 1100rpm~1800rpm

Powerful

Superb climbing and overtaking abilities, with a maximum torque of 520N. m and a torque reserve of 30%
Strong starting and acceleration capabilities, optimized turbocharger, low-speed high torque, 1000 rpm torque can reach 470N. m, maximum torque 560N. m

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 an ideal power source for special vehicles such as highway buses, public buses, and special vehicles
The engine can be equipped with two generators in parallel to meet the electricity needs of various types of buses
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

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