二手 Volvo D12D engine 在 安庆市, 安徽省, 中国
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The **D12D engine** is a diesel powerplant developed by **Volvo**, widely used in trucks, excavators, and other heavy-duty equipment. It combines robust engineering with advanced technology to deliver reliable performance in demanding applications.
The D12D is an **inline 6-cylinder, 4-stroke turbocharged diesel engine** featuring direct injection and intercooling. It incorporates wet replaceable cylinder liners for durability and ease of maintenance. The cylinders are numbered from the end farthest from the flywheel, following a firing order of **1-5-3-6-2-4** to ensure smooth operation.
Technologically, the engine utilizes **V-ACT (Volvo Advanced Combustion Technology)** to optimize air management and combustion efficiency. A turbocharger with a wastegate enhances power output, while electronically controlled **internal exhaust gas recirculation (iEGR)** reduces nitrogen oxide (NOx) emissions without requiring additional exhaust aftertreatment systems. All functions are governed by Volvo’s **EMS 2 (Engine Management System 2)**, which provides precise control over fuel injection, turbocharging, and emissions.
In terms of performance, the D12D has a **12.1-liter displacement** and offers multiple power ratings: 340, 380, 420, 460, and 500 hp (with the 500 hp variant not available in China). For example, in Volvo’s 46-ton excavators like the EC460BLC, the engine delivers a rated power of **245 kW (1,800 rpm)** and a maximum torque of **1,720 N·m at 1,350 rpm**. The bore and stroke measure 131 mm and 150 mm, respectively, with compression ratios varying between 18.2:1 (for lower horsepower models) and 18.1:1 (for higher horsepower versions).
The D12D finds extensive use in **commercial vehicles** such as the Volvo FM12 truck, where it powers long-haul and heavy-duty transport operations. It also serves as the core power source for **construction equipment**, including large excavators, where its durability and high torque output are critical for heavy lifting and earthmoving tasks. Designed to meet **Tier 3/Stage IIIA emissions standards**, the engine balances environmental responsibility with industrial performance, making it a trusted choice for professionals worldwide.