Dongfeng Cummins ISD4.5 bus engine

With excellent reliability, the ISD series engine has become the “benchmark” product among the same-level engines in the industry. With the increasingly stringent emission regulations, ISD has become the preferred driving force of mainstream bus manufacturers across the country with its stable and reliable product platform and sustainable technological development advantages.
The ISD series 4.5-liter fully electronically controlled engine, with a power covering 140-300 horsepower, is widely used in 6-11m highway buses, tourist buses, public buses and school buses. ISD has high operational efficiency, long working cycle and durability. The advanced electronic control system is powerful, digital and intelligent management of intake, exhaust, cooling, fuel, braking, post-processing and other systems, and establishes a powerful information exchange platform between the engine and subsystems, and between the engine and the entire vehicle. Support real-time monitoring and early warning of faults.
Since its launch on the market, the ISD series engines have been favored by OEMs and users with their remarkable economic characteristics such as high power per liter, low fuel consumption, long overhaul cycles, low operating costs, and energy-saving and environmental protection advantages.
Intelligent electronic control  Advanced electronic control integrated system, large-capacity electronic control module, collect information from all drive train components such as electronic gearbox, ABS brake and ASR anti-skid through standard data bus, forming a seamless information flow through high-speed data The communication interface is shared to ensure that the engine maintains the best working condition during operation, and maintains high efficiency and low emissions under different load conditions. At the same time, it has self-protection and intelligent diagnosis functions such as anti-vibration, anti-overheating, anti-overload, and reliability. Excellent durability.

High-efficiency fuel-saving   high-pressure common rail fuel system, with higher injection pressure, up to 1800bar, more accurate control of injection timing and fuel injection volume, more complete combustion, wider economic fuel consumption area, greatly improved fuel economy, and further improved low-speed performance , Noise reduction and cold start performance are better.
Strong power  Fast start, good acceleration, strong climbing, super low-speed torque output.

Economical use  Highly integrated engine subsystems, multiple ways to achieve fuel saving and consumption reduction, higher power, stable and reliable operating performance under complex working conditions, excellent power, long service life, long maintenance intervals.
Leading Emissions Globally  National V and EEV are developed from the same basic platform, which are durable and reliable, have strong inheritance, and are easy to upgrade. As of the end of 2010, more than 300,000 selective catalytic reduction systems (SCR) have been supplied by Cummins Emission Treatment System Plant to global engine companies for Euro V, EEV and U.S. EPA2010 emission solutions. The reliability is fully verified and extensive Recognized.