lubricant High Temperature Antioxidant,Zinc Dialkyl Dithiophosphate,Butyl Octyl Diphenylamine,Lubricant Phenolic Antioxidant Liaoning Yeboon Lubricating Oil Manufacturing Co.,Ltd. , https://www.yblube.com
**I. Overview**
Since 2001, both Europe and the United States have introduced second-stage emission regulations for off-road vehicles. To comply with these standards, engines larger than 10 liters were required to adopt electronic control systems and air-to-air cooling technologies. By 2005, third-stage emission rules were enforced, making it mandatory for all engines to use these advanced technologies to meet the stricter environmental requirements.
Electronic control technology in engines involves the integration of various functions—such as speed control, fuel management, data acquisition, and fault diagnostics—through an Electronic Control Unit (ECU). Data communication is typically handled via a Controller Area Network (CAN) bus, using the internationally recognized J1939 protocol. The key to leveraging this technology lies in utilizing the CAN bus for real-time monitoring and control of electronically controlled engines.
In 2005, our company began equipping road rollers with electronically controlled engines. The first model, XD121, was powered by a QSB 3.9 Cummins engine. That same year, digital bus meters were introduced for the first time, demonstrating significant advantages in performance and reliability.
**II. Introduction to MURPHY Instruments**
PowerView, developed by MURPHY Corporation, is a sophisticated digital bus display instrument designed to provide operators with critical engine information. It displays a wide range of engine parameters and service codes, acting as a window into the operation of an electronically controlled engine.
**★ PowerView Appearance**
**★ PowerView Interface**
Once the power is turned on, if the engine has a pre-start sequence, PowerView will show “WAIT TO START.†The operator can initiate the engine once this message disappears. After starting, the engine’s key parameters are displayed on the screen. Depending on the configuration, it can show either a single parameter or multiple parameters across different pages. A single page can only display one pre-set parameter, but users can navigate through other parameters using the arrow keys. Sub-pages can display up to four pre-defined engine parameters simultaneously.
On the engine parameter screen, pressing the “Menu†button opens the main menu, which includes seven options. Using the arrow keys, the user can scroll through the menu, and the right button allows continuous navigation.
**III. Application on Road Rollers**
Digital CAN bus meters have been successfully integrated into our company’s road rollers, particularly in full hydraulic vibratory models such as XS191D, XS122D, YZC12G, and XD121. These meters offer numerous benefits. First, they eliminate the need for traditional analog instruments like oil pressure gauges, water temperature meters, tachometers, and hour meters. They also replace visual indicators such as fault alarms and temperature warnings, resulting in a cleaner, more modern dashboard layout. As shown in Figure 4, the XS191D dashboard is simple yet elegant.
Second, these meters can display previously unseen engine metrics, such as fuel efficiency, fuel consumption, engine load, and historical fault records. This helps operators gain a deeper understanding of the engine’s performance and supports more effective maintenance practices.
Third, the system is easy to install and wire. As shown in Figure 5, the wiring process is straightforward: connect a 12VDC or 24VDC power supply, then link the device to the engine controller via the CAN bus for data transmission. Additionally, PowerView can be equipped with 1.16-inch pointer meters to visually represent key data that drivers frequently monitor.
When connecting the wiring, keep the following in mind:
1. A 120-ohm resistor should be placed between CAN high and CAN low near the PowerView terminal.
2. The cable must meet SAE J1939 specifications.
3. Use shielded RS485 cables when connecting PVA meters.
4. If no backlight regulator is used, the backlight should be grounded instead of connected.
**IV. Conclusion**
The implementation of digital CAN bus meters on road rollers has yielded excellent results. It has positioned our company at the forefront of adopting advanced technology and significantly enhanced the overall technical capabilities of our equipment.
October 06, 2025