Overview

Weichai's new generation of high-end lightweight engine platform products; The power coverage is 125-140kW, meeting the emissions requirements of National V/VI and suitable for 7-7.5m buses.

rated power

Company:American metric system

maximum power	190 hp140 kW
minimum power	170 hp125 kW
Maximum torque speed	680/（1200-1800） N.m / r/min

emission standard

National 5/National 6

routine

Product Series	WP4.1N
fuel	diesel
engine type	Inline 4-cylinder, four stroke engine
Cylinders	4
Number of valves	4
bore	105 mm
itinerary	118 mm
displacement	4.088 L
Air intake method	turbocharged intercooled
compression ratio	18:1
combustion system	Electric controlled high-pressure common rail

Engine size (approximate final size depends on optional components)

length	915.5 mm
width	724 mm
height	824.2 mm
G weight	390 kg

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

Technical Features

Ultra long oil change: oil change interval of 40000 kilometers

economy

The minimum fuel consumption rate is 196g/kW • h, which is 3g/kW • h lower than competitors
The fuel saving speed range has been expanded to 1100r/min-1800r/min, saving 8% of fuel consumption per 100 kilometers compared to competitors

Power performance

Strong climbing and overtaking ability, with a maximum torque of 680N. m
Strong starting and acceleration ability, high low-speed torque

reliability

New design, B10 lifespan reaches 800000 kilometers
Adopting high-quality suppliers from Weichai system, developed according to the high reliability requirements of large displacement engines
Longmen style reinforced body, cylinder head reinforced design, produced by Weichai's independent casting line for large displacement engines

comfort

Standard silicone oil clutch fan, reducing vehicle acceleration noise by 1.2dB (A)
Fuel pre injection calibration technology optimizes combustion noise quality, lower than competitors
High precision 7-stage helical gear system design, precise meshing, reducing gear system noise by 0.5dB (A)
Suspended noise testing laboratory noise source localization, precise optimization

adaptability

Comprehensive configuration, suitable for 7-7.5-meter buses, meeting the structural and performance requirements of different users
Optimize the front wheel system of the generator, and the entire vehicle can be equipped with various accessories such as a generator and air conditioning compressor, enriching users' choices

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