Engine Specifications of sinotruk howo
The Sinotruk Howo A7 420 comes with a powerful engine built for high performance. It provides both strength and efficiency for heavy-duty work.
Engine Model and Emission Standard
- Engine Model: D12.42, which meets Euro III emissions. Some models may also meet Euro II standards.
Engine Type
- Type: Inline 6-cylinder, water-cooled, 4-stroke, turbocharged with an intercooler. The engine uses a high-pressure common-rail fuel injection system, boosting both fuel efficiency and power.
Performance and Power Output
- Maximum Output: 420 horsepower (hp) at 2200 rpm.
- Maximum Torque: 1160 Nm at 1100-1600 rpm. This provides excellent pulling power for heavy loads.
Engine Displacement and Dimensions
- Displacement: 9.726L for D10 models, and 11.596L for D12 models.
- Bore: 126mm, optimized for air intake and exhaust efficiency.
Stroke and Compression
- Stroke: 130mm for D10 models and 155mm for D12 models. The longer stroke increases power output.
- Compression Ratio: 17:1, balancing both power and fuel efficiency.
Fuel Efficiency
- Specific Fuel Consumption: 188g/kWh, showing good fuel efficiency for a powerful engine.
- Fuel Injection System: The high-pressure common-rail system operates at up to 1600 bar, improving combustion and power delivery.
This engine is built for a good mix of power, fuel efficiency, and reliability, making the Sinotruk Howo A7 420 a solid choice for heavy-duty applications.https://www.youtube.com/watch?v=P8BXincuh48
Transmission and Clutch of sinotruk howo
The Sinotruk Howo A7 420 features a strong transmission and clutch system, built to handle tough road conditions and heavy loads.
Transmission System
The transmission in the Sinotruk Howo A7 420 offers several options to suit different needs. You can choose between:
- 10 forward gears and 2 reverse gears (HW13710CL)
- 12 forward gears and 2 reverse gears (HW19712)
These options give drivers flexibility to adapt to various driving conditions, with smooth gear shifts. The main transmission uses a double counter shaft, providing reliable power, while the auxiliary transmission includes a planetary reduction system for better gear ratio and torque distribution.
In some models, the synchronizer is an available option, especially in the HW19710T model, which makes shifting smoother and easier.
Clutch System
The Howo A7 420 clutch system is designed for durability and smooth operation. It features a single-plate dry coil-spring clutch with these specifications:
- Clutch Diameter: 430mm
- Operation: The clutch operates hydraulically, with air assistance for smooth, responsive control.
There are different clutch variants to fit various engine models:
- 430A for D10.38, D12.38, and D12.42 engines
- 430B for the D10.34 engine
These variants help optimize performance across different engine types, improving the vehicle’s overall efficiency and drivability.
Axles and Suspension of sinotruk howo
The Sinotruk Howo A7 420 comes with strong axles and suspension systems. These are designed to improve stability and increase load-bearing capacity.
Front Axle
- Model: HF9 series
- Rated Load: 9 tons (or 7 tons in some configurations)
- Type: Drum-type or disc-type
- Steering: Double T-cross section beam
- Brake System: Drum brake system
The front axle is designed to offer great maneuverability and handling. The double T-cross section beam gives strong steering capability. The choice between drum-type or disc-type allows for flexibility based on customer needs.
Rear Axles
- Model: HC16
- Type: Pressed axle housing
- Reduction: Central single reduction with planetary wheel reduction and differential locks between wheels and axles
- Speed Ratios: 4.42, 4.8, 5.73
- Brake System: Drum brake system
The rear axles are built to be tough, ensuring durability and great performance. The planetary wheel reduction, combined with differential locks, helps improve traction and stability under heavy loads.
Suspension System
- Front Suspension: Leaf spring suspension with shock absorber and transverse stabilizer
- Rear Suspension: Disconnected leaf spring suspension with transverse stabilizer
- Optional: Air spring suspension
The suspension system balances comfort and performance. The front leaf spring suspension, with shock absorbers and a transverse stabilizer, improves handling. The rear suspension also uses leaf springs, ensuring better load distribution and reducing vibrations. For added comfort and stability, air spring suspension is available as an option.
Axle Loading Capacity
- Front Axle: 9,000 kg
- Rear Axle: 2 x 16,000 kg
The Howo A7 420 has impressive axle load capacities. It is built to handle demanding tasks, making it suitable for heavy-duty operations.
Chassis and Frame
The Sinotruk Howo A7 420 has a strong U-profile parallel ladder frame. It is built for durability and reliability. The frame’s dimensions are 300×90×8mm or 300×80×8mm, depending on the model. It also includes a reinforced subframe for added support. All cross members are cold riveted, which boosts strength and stability, making it perfect for heavy-duty use.
Frame Specifications
- Frame Type: U-profile parallel ladder frame
- Frame Dimensions: 300×90×8mm or 300×80×8mm
- Reinforced Subframe: Provides extra structural support
- Cold Riveted Cross Members: Increases the frame’s durability
Axles and Ground Clearance
The Howo A7 420 features a wheelbase of 3225+1350 mm, with a front overhang of 1540 mm and a rear overhang of 870 mm. It offers an approach angle of 15° and a departure angle of 46°. This makes it suitable for various types of terrain. The vehicle also has a minimum ground clearance of 314 mm, making it ideal for off-road driving.
- Front Axle: HF7 axle with a 7000 kg capacity
- Rear Axle: ST16 or HC16 axle, each with a 2×13000 kg capacity
- Axle Type: Steering with a double T-cross section beam at the front, and pressed axle housing with differential locks at the rear.
Braking and Steering System
Braking System
The Sinotruk Howo A7 420 has a reliable braking system with these features:
- Service Brake: This is a dual-circuit compressed air brake system. It provides strong stopping power and ensures safety in different road conditions.
- Parking Brake (Emergency Brake): A spring energy brake system that works on the rear wheels. It uses compressed air to securely engage the rear wheels, keeping the vehicle still even on slopes.
- Auxiliary Brake: The vehicle includes an engine exhaust valve brake (EVB) and engine exhaust braking. These systems use the engine’s exhaust mechanism to help with braking, adding extra stopping power without stressing the main brakes.
- ABS: The Howo A7 420 is equipped with an Anti-lock Braking System (ABS). This helps keep the vehicle stable and under control during heavy braking, especially on slippery or wet roads.
- Additional Features: There is an optional auto clearance adjusting arm. It automatically adjusts the brake clearance, improving the braking system’s efficiency.
Steering System
The steering system of the Sinotruk Howo A7 420 ensures smooth and precise handling. Important components include:
- Steering Gear: The ZF8098 steering gear combines mechanical and hydraulic parts. The mechanical section transfers force from the steering wheel to the system, while the hydraulic part makes the steering light and easy to use.
- Steering Oil Pump: The hydraulic system has an oil pump that circulates fluid at a rate of 20-24L/min, ensuring smooth steering.
- System Pressure: The maximum pressure for the steering system is 15MPa, with some reports showing it could go up to 18MPa. This higher pressure improves vehicle stability and responsiveness while steering.
- Booster Cylinder: The booster cylinder has a 110mm bore size, which helps amplify the steering force effectively.
- Input and Output Shafts: The input shaft spline measures 1×79 ZGN715, and the output shaft spline is B25/16″x48 ZGN738, ensuring strong and efficient force transfer in the steering system.
- Output Angle: The system provides an output angle of ±45°, giving the driver better control and maneuverability.
- Hydraulic Assistance: The hydraulic section of the steering gear sends high-pressure oil to the chambers, making the steering operation light and responsive while improving vehicle stability.
Electrical System
The Sinotruk Howo A7 420 has a strong electrical system built for reliability and performance. Here are the main components and specs of the vehicle’s electrical system:
Operating Voltage
The electrical system uses a 24V voltage with a negative ground setup. This ensures all vehicle components are compatible and stable.
Starter
The vehicle comes with a 24V starter motor that delivers 7.5kW of power. It ensures reliable ignition even in tough conditions.
Alternator
The alternator is a 3-phase, 28V unit that provides a continuous power output of 1500W. Some versions can provide 2240W, which is enough to power all electrical needs.
Batteries
The Howo A7 420 uses two 12V batteries, with options for either 165Ah or 180Ah capacity. This allows for longer power storage and smooth operation, even on long trips.
Key Electrical Components
The Sinotruk Howo A7 420’s electrical system includes several important components for operation and safety:
– Cigar-lighter
– Horn
– Headlamps
– Fog lights
– Brake lights
– Indicators
– Reverse light
These components are integrated to ensure maximum functionality and convenience for the driver.
Dimensions and Weight
The Sinotruk Howo A7 420 is built to deliver strong performance with ideal dimensions for both DUMP TRUCK and tractor truck versions. Here are the main specifications for its size and weight:
Overall Dimensions
- Dump Truck Version: 10200 x 2496 x 3850 mm
- Tractor Truck Version: 9745 x 2496 x 3550 mm
Wheel Base and Track
- Wheel Base: 3800 + 1350 mm (for the dump truck version)
- Front/Rear Wheel Track:
- Front: 2022/2041 mm
- Rear: 1830/1830 mm
Overhang
- Dump Truck Version:
- Front: 1500 mm
- Rear: 700 mm (725 mm for some models)
- Tractor Truck Version:
- Front: 1500 mm
- Rear: 2295 mm
Approach and Departure Angles
- Dump Truck Version:
- Approach Angle: 16°
- Departure Angle: 70°
- Tractor Truck Version:
- Approach Angle: 15°
- Departure Angle: 46°
Cargo Body Dimensions (For Dump Truck)
- Dimensions: 7300 x 2300 x 1500 mm
Weight Specifications
- Curb Weight:
- Dump Truck Version: 15000 kg
- Tractor Truck Version: 12500 kg
- Other Dump Truck Variations: 22090 kg, 29300 kg
- Gross Vehicle Weight:
- Dump Truck Version: Max 50000 kg, 70000 kg
- Tractor Truck Version: 25000 kg
Loading Capacity
- Maximum Loading Capacity:
- Dump Truck Version: 40000 kg
- Tractor Truck Version: 13000 kg
Axle Loading Capacity
- Dump Truck Version:
- Front Axle HF9 Rated Load: 7t
- Rear Axle HC16
- Tractor Truck Version:
- Front Axle: 9000 kg
- Rear Axles: 2*16000 kg
- Other Tractor Truck Models:
- Front Axle HF7 Rated Load: 7t
- Rear Drive Axle ST16 Double Reduction
性能
Sinotruk Howo A7 420是一款重型卡车，适用于各种复杂地形，设计目标是提供卓越的性能。它结合了动力、效率和可靠性，适合长途运输和建筑施工等用途。
最高行驶速度
- Sinotruk Howo A7 420的最高行驶速度为100 km/h。这使得卡车在高速公路上能够高效行驶，同时保持良好的动力和燃油效率，适合长途驾驶。
最大爬坡能力和爬升能力
- 虽然没有明确标明具体的坡度，但卡车配备了最大停车坡度20%，显示出其强大的爬坡能力。这使其在建设和越野环境中，特别是在上坡路段，能够表现出色。
底盘离地间隙和转弯半径
- Howo A7 420的最低离地间隙为314 mm，适合越野环境，能够轻松应对崎岖的地形而不受损害。
- 该车的最低转弯直径为15米，牵引车车型前转弯半径为2460 mm，后转弯半径为2250 mm，即使在狭小的空间内也能保持良好的机动性。
燃油效率
- 尽管没有提供具体的油耗数据，但该车配备了400L油箱（标准），并提供600L油箱的选项。这使得它在长途运输过程中可以减少加油次数，从而提高整体效率。
- 该车搭载的是水冷、6缸涡轮增压发动机，最大输出功率为273 kW（2200 rpm），最大扭矩为1500 N·m（1100-1600 rpm），能够高效应对重载。
发动机与变速器
- Howo A7 420搭载了D12.42发动机，最大功率为420马力，排量为9.726L，符合Euro II或Euro IV排放标准，具体依据车型而定。
- 它配备了HW19710变速器，拥有10个前进档和2个倒档，确保在各种地形上平稳换档，提供更好的操控。
制动系统
- 为了确保安全，Howo A7 420配备了双回路压缩空气刹车，用于行驶刹车，后轮则采用弹簧能量压缩空气驻车刹车。
进坡角和离坡角
- 该车的进坡角为15度，离坡角为46度，能够有效应对障碍物，适应不平坦的地形，特别适合建筑和越野应用。 “`
Additional Features
The Sinotruk Howo A7 420 has many features designed to make driving more comfortable and functional. Here are some of the main ones:
- Cab Options:
- A7-P High-floor Lengthen cab, A7-V, or A7-W high-roof cab for extra comfort and space.
- Comfort and Convenience:
- Single or double bunkers for resting.
- Safety belts to protect the driver and passenger.
- MP5 for entertainment during long drives.
- Left or right-hand drive configurations to fit different markets.
- Air conditioner for a comfortable driving experience in any weather.
- Central door lock for extra security.
- Electric window lifter for easy window operation.
- Electric mirrors with heating for clear visibility in all weather.
- Adjustable seats with ample legroom for better driver comfort.
- CAN+VDO numerical control instrument for easier control and monitoring.
- Remote control key for convenience and security.
- Adjustable steering wheel to suit drivers of all sizes.
- Air horn for better visibility on the road.
- 4-point floating suspension and shock absorbers to provide a smooth ride.
- Suspension and Tires:
- Air suspension system for added comfort and stability.
- Tire options include 315/80R22.5 and 12.00R20 radial steel tires, known for durability and performance.
Transmission and Steering
- Transmission:
- Models: HW15710 or HW19710 with a manual setup.
- Offers 10 forward gears and 2 reverse gears, plus a PTO for added flexibility.
- Steering:
- Model: ZF8098 hydraulic steering with power assistance for easy control and maneuverability.
Brake and Electrical System
- Brake System:
- Dual circuit compressed air brake for the service brake system.
- Spring energy-operated compressed air parking brake on the rear wheels for reliable emergency braking.
- Engine exhaust valve brake for auxiliary braking.
- Electrics:
- Operating voltage: 24V with a negative ground system.
- Batteries: 2×12 V, 165 Ah to ensure reliable performance.
- Standard lights include horn, headlamps, fog lights, brake lights, indicators, and reverse light for safety and visibility.
Fuel Tank and Fifth Wheel
- Fuel Tank:
- Large 400L capacity for long-distance hauling.
- Fifth Wheel:
- Options for 50# (2 inch) and 90# (3.5 inch) fifth wheel configurations for versatile use.
The Sinotruk Howo A7 420 is a strong, dependable, and flexible truck made to handle tough jobs. It features an efficient engine, solid transmission, and long-lasting axles, built for both performance and durability. Whether on rough roads or construction sites, this truck provides the reliability needed for success in many industries.
