Solutions for Commercial Vehicles & Construction Machinery
Match power distribution, control modules, switches and displays to the platform: trucks, buses, excavators, agricultural machinery and new-energy vehicles, with the right IP rating, temperature range and CAN protocol.
Industry solution categories
Heavy Truck
Cab electronics and power distribution
Full guide
Construction Machinery
Sealed distribution and hydraulic control
Full guide
Bus & Coach
Passenger-facing controls and displays
Full guide
New Energy Vehicles
HV conversion, control and EV cockpit
Full guide
Agricultural Machinery
Machine bus, implement interface and sealed hardware
Full guideCab and chassis electronics for heavy-duty trucks
Heavy-truck programmes combine a long service life, high load count and continuous chassis vibration with a cab that still needs body control, driver inputs and clear vehicle-state information. The architecture must also account for 12 V and 24 V platforms and for the boundary between tractor and trailer. That boundary decides which organisation owns power, signals, diagnostics and service access on each side of the coupling, and must be frozen before harness release for production and field service.
- Voltage architecture
- 12 V / 24 V
- Environmental envelope
- Position-specific IP
- Primary network
- CAN / J1939
- Programme constraint
- Tractor / trailer split
PBX-2050 surround view and PBX-955 camera-monitor mirrors represent the cab-visibility layer. Both are project-configured systems rather than standard catalogue items: camera layout, display format and required field of view follow the tractor and trailer geometry. They sit above the same distribution and control foundation as the rest of the cab, so power-up, network ownership and fault reporting still belong in the vehicle architecture. The full guide puts those layers together.
Excavator, loader and crane electronics
Construction machinery uses familiar battery, distribution and CAN layers, but much of the useful work is hydraulic. Electrical hardware therefore has to survive dust, vibration, engine-bay heat and the declared cleaning regime while controllers meter proportional valve outputs rather than only switching lamps and motors. Attachment boundaries and machine safety also decide which behaviour stays hard-wired when the shared bus is unavailable. The mounting map must state both exposure and service access.
- Voltage architecture
- 12 V / 24 V
- Environmental envelope
- Dust / wash regime
- Primary network
- CAN / J1939
- Programme constraint
- Hydraulic outputs
PBX-2050 surround view addresses blind zones that move with a boom or attachment, while PBX-2202 represents the compact operator-cluster layer. Both are configured around the machine rather than copied from a road vehicle. Their usefulness depends on decisions made earlier: where sensors and cameras can see, which controller publishes machine state, and how the operator receives a fault without losing the work view. The full guide joins those decisions to power and hydraulic control.
Cabin electronics for city buses and coaches
Bus and coach platforms add a passenger-facing input domain — stop requests, accessibility devices, emergency units and saloon annunciation — to a distribution system stretched along the full body. The specification must separate cab, saloon and chassis environments and define passenger behaviour before the panel layout. A general stop request, an accessibility request and an emergency input may look similar at the button but require different paths and driver responses. That logic belongs in the signal matrix, not only the HMI drawing.
- Voltage architecture
- 24 V typical / 12 V
- Environmental envelope
- Cab / saloon / chassis
- Primary network
- CAN / LIN / RF
- Programme constraint
- Passenger accessibility
PBX-955 camera-monitor mirrors represent the indirect-vision layer; PBX-961 and the PBX-2203 combiner variant represent driver information. These are project-configured systems, so field of view, display position and regulated tell-tales follow the installed vehicle. They do not replace the passenger layer: stop-request state, accessibility feedback and body-system warnings still need agreed publishers and priorities at the driver position. The full guide keeps those responsibilities separate.
Electronics for new-energy commercial vehicles
Electric and hybrid commercial vehicles keep the diesel platform's low-voltage body and cockpit functions but replace the alternator with a sequenced high-voltage source. The programme must define conversion to the auxiliary bus, pre-charge ownership, pack protection and the boundary between vehicle and battery control. Both the HV and LV classes must be stated at RFQ.
Scope note: Youlai supplies HV-to-LV conversion, pack-side fusing, controllers and low-voltage electronics. Cells, pack assemblies, cell-sensing front ends, balancing hardware and traction inverters remain outside our scope; any controller-hosted battery-management strategy depends on the pack supplier's sensing architecture.
- Voltage architecture
- HV + 12 V / 24 V LV
- Environmental envelope
- HV installation zone
- Primary network
- CAN / J1939 / UDS
- Programme constraint
- Pack-system boundary
EBX-2314 anchors conversion and pre-charge, JDK-2509 anchors pack-side fault protection, and PBX-2301 represents the EV cockpit. None defines the complete start-up chain alone: enable authority, contactor timing, fault dispatch and the driver's state model cross supplier boundaries. The full guide assigns those integration questions instead of treating the modules as three standalone parts.
Tractor and harvester electronics
Tractors, harvesters and sprayers share sealed hardware with construction equipment, but they also host implements built by other manufacturers and may travel on public roads. The specification therefore has to separate the machine's own network from the implement interface and define environmental duty by mounting zone. A rear connector alone does not make the whole machine ISOBUS-conformant.
Agricultural machinery guide →
Scope note: ISO 11783 conformance is tested independently and listed by functionality in the AEF database. Youlai does not hold AEF certification or supply certified ISOBUS terminals or implement ECUs; our scope is the surrounding power distribution, operator inputs, sensing and machine-side integration.
- Voltage architecture
- 12 V / 24 V
- Environmental envelope
- Field / wash regime
- Primary network
- J1939 / ISOBUS
- Programme constraint
- Implement compatibility
NBX-971 and NBX-961 represent sealed distribution, NBX-980 the protected battery position, and EDK-2507 the operator-input layer. Mounting position and the declared wash test still govern selection; an IP rating alone does not define pressure-cleaning durability. The full guide adds implement ownership, the ISOBUS boundary and seasonal duty cycle.
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