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Product Details
Basic Info.
Model NO.
QST30
Displacement
30.5L
Emission Standard
Optional
Engine Type
V-Type Engine
Number of Cylinders
12-Cylinder 4-Stroke
Start
Electric Start
Net Weight
3250
Gross Weight
3740
Transport Package
Standard Export Packaging
Specification
2050*1850*2100mm
Trademark
LEO or Customized
Origin
China
HS Code
8409914000
Production Capacity
1000pieces/Year
Packaging & Delivery
Package Size
205.00cm * 185.00cm * 210.00cm
Package Gross Weight
8000.000kg
Product Description
The QST30 is a high - performance diesel engine designed for heavy - duty applications. It is a V - 12 cylinder, four - stroke, water - cooled engine with a displacement of 30.5 L.
Power and Torque
- Power Output: It can produce a substantial power output, typically ranging from 700 to 1000 hp (522 - 746 kW), meeting the high - power requirements of various heavy - duty equipment.
- Torque Performance: With a high torque output, usually in the range of 2500 - 3500 lb - ft (3389 - 4744 N•m), it enables the connected machinery to operate with strong pulling and driving forces, even under heavy loads.
Engine Design
- Block Material: The engine block is made of cast iron, which offers excellent strength and durability, capable of withstanding the high pressures and forces generated during engine operation.
- Cylinder Head: It features a swirl - port cylinder head design, which helps in improving the air - fuel mixture formation and combustion efficiency, contributing to better performance and reduced emissions.
Fuel System
The QST30 is equipped with a high - pressure common - rail fuel system. This system allows for precise control of fuel injection, enabling efficient combustion. It can adjust the fuel injection quantity and timing according to different operating conditions, resulting in better fuel economy and lower emissions.
Cooling and Lubrication Systems
- Cooling System: It adopts a closed - loop water - cooling system, including components like a water pump, radiator, fan, and thermostat. The water pump circulates the coolant to absorb heat from the engine, and the radiator dissipates the heat with the help of the fan. The thermostat maintains the engine at an optimal operating temperature.
- Lubrication System: A reliable lubrication system ensures smooth operation of the engine's moving parts. It consists of an oil pump, oil filter, and oil pan. The oil pump supplies oil to various engine components to reduce friction and wear, prolonging the engine's service life.
Turbocharging and Emissions Control
- Turbocharging: The engine is turbocharged, which compresses the intake air to increase the air density, allowing more fuel to be burned and thus enhancing the power output.
- Emissions Control: It incorporates advanced emissions control technologies to meet strict environmental regulations. These may include exhaust gas recirculation (EGR) systems, diesel particulate filters (DPF), and selective catalytic reduction (SCR) systems, which help reduce harmful emissions such as nitrogen oxides (NOx), particulate matter (PM), and hydrocarbons (HC).
Applications:
The QST30 engine is widely used in various heavy - duty applications, such as large mining trucks, construction machinery like bulldozers and excavators, and generator sets, providing reliable power for these demanding operations.
The QST30 engine is mainly used in large - scale mining trucks, large - tonnage dump trucks, and some special - purpose mining vehicles in the mining industry. Here are the details:
- Large - scale mining trucks: Vehicles like the CAT777D mining truck can be equipped with the QST30 engine. This engine's high power and torque outputs enable the 777D to handle heavy loads and rough terrains in mining operations, facilitating efficient transportation of ore and other materials.
- Large - tonnage dump trucks: The HD465 - 7 dump truck is another example. The QST30 engine provides the necessary power to ensure the HD465 - 7 can operate smoothly during loading, transporting, and unloading processes, improving the overall efficiency of mine material handling.
- Special - purpose mining vehicles: Some underground mining vehicles and mine - specific transport vehicles also use the QST30 engine. Its reliable performance and high - power output make it suitable for various special - purpose mining vehicles, meeting the specific requirements of different mining operations.
In addition to the mining industry, the QST30 engine is also widely used in other fields. In the construction industry, it powers large - scale construction machinery such as bulldozers and excavators, providing the power needed for earth - moving, digging, and leveling operations. In the power generation field, it is used in generator sets to provide reliable backup or primary power for industrial and commercial applications.
