The HH312 Skid Loader is equipped with a four-stroke, direct-injection, water-cooled diesel engine with four cylinders (bore x stroke 98 x 110 mm) and a displacement of 3.319 L. It delivers a rated net power of 61.3 kW (at 2500 rpm), maximum torque of 269.3-293.5 Nm, and a specific fuel consumption of 253 g/kW·h. The 12V starting system adapts to various operating scenarios and provides stable and efficient power.
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Description
Product size parameters:
Serial No.
Engine Parameter Category
Specific Item
Specification
Description
1
Engine Model
Type
4-stroke direct injection water-cooled diesel engine
2
Cylinders - Bore × Stroke (mm)
4 - Φ98×110
3
Fuel Injection Method
Direct injection
4
Compression Ratio
18.1
5
Displacement (liter)
3.319
6
Rated Power (Gross Power, kW)
64.1
Without fan
Rated Speed (for Gross Power, min⁻¹)
2500
7
Rated Power (Net Power, kW)
61.3
With fan
Rated Speed (for Net Power, min⁻¹)
2500
8
Maximum Torque (N·m)
269.3~293.5
With fan
Speed (for Maximum Torque, min⁻¹)
(1850±100)
9
Low Idle Torque (N·m)
234.6~259.8
Speed (for Low Idle Torque, min⁻¹)
1000
10
Fuel Consumption Rate (g/kW·h (PS·h))
253
Rated output
11
Rated Output Conditions (g/kW·h (PS·h))
25°C, 750mmHg, 30%
Rated output
12
No-load Idle Speed - Maximum (min⁻¹)
2650
+10/-10
No-load Idle Speed - Minimum (min⁻¹)
1000
+10/-10
13
Speed Regulation Performance
Governor Type
Electronic speed regulation
Transient Speed Regulation Rate (%)
max.12
Load
Steady-state Speed Regulation Rate (%)
max.6.5
100%
Recovery Time (sec)
max.6
↓
Stability (rev)
max.22
0%
14
Allowable Tilt Angle
Longitudinal (deg)
30(25)
Short time 3 minutes
Lateral (deg)
30(25)
(Long time)
15
Ignition Sequence
1-3-4-2
From flywheel end
16
Rotation Direction
Counterclockwise
From flywheel end
17
Engine Weight (kg)
~260
18
Fuel Injection Timing (deg)
FIT11.5
FIT b.T.D.C
19
Fuel System
Fuel Type
Diesel
Fuel Injection Pump
YANMAR MP4 pump
Fuel Injector
Hole type
Fuel Filter
Paper filter
20
Lubrication System
Type
Forced lubrication
Engine Oil Grade
Recommended API CF-4, SAE 15W-40 or CI-4, 15W-40
Oil Pump
Cycloid pump
Oil Filter
Paper filter
Engine Oil Capacity - Maximum (liter)
10.2
Maximum
Engine Oil Capacity - Effective (liter)
4.5
Effective
Engine Oil Pressure - at Rated Speed (kgf/cm²)
4
Rated speed
Engine Oil Pressure - at Low Idle (kgf/cm²)
0.6
Low idle
21
Cooling System
Radiator
Without
Pressure Cap Pressure (kgf/cm²)
Recommended 0.9
Fan
7 - Φ500, Blowing
Crankshaft/Fan Speed Ratio
130/130
Water Pump Flow (L/min)
73.8
Rated speed
Coolant Capacity (liter)
4.2
Engine only
Heat Dissipation (MJ/h)
Rated speed
22
Air Filter
With
Inlet resistance ≤ 2.94kPa; Air intake 5.4m³/min
23
Breathing System
Closed type
24
Muffler
With
Exhaust back pressure ≤ 9.81kPa; Exhaust gas volume 20.8m³/min
25
Starting System
Starter
12V-3.0kW
Battery
Recommended 120Ah, CCA799
Cold Start Device
Intake air heater 500W
26
Generator
12V-55A
27
Engine Color
Black
28
Noise (Engine Itself, dB(A))
Full load, rated speed ≤ 96.5; No-load, high idle ≤ 91.5; Low idle ≤ 80.1
Engine 1m, 5 directions
29
Emission Standard
National III
Products advantages:
Powerful Power Output, Guaranteed Operating Efficiency
Equipped with a 4-stroke, direct-injection, water-cooled diesel engine with a 4-cylinder layout (bore x stroke 98 x 110 mm) and a displacement of 3.319 L. Rated net power is 61.3 kW (2500 rpm), and maximum torque ranges from 269.3 to 293.5 N·m (at 1850 ± 100 rpm). This powerful and stable output easily handles heavy-duty operations.
Utilizing direct fuel injection, the engine achieves a fuel consumption of only 253 g/kW·h at rated output, resulting in efficient combustion and lower operating costs. Equipped with an electronic speed control system, the engine boasts a steady-state speed regulation of ≤6.5%, ensuring stable speed and reducing inefficient fuel consumption, making it suitable for long-term, continuous operation.
Adaptable to Complex Operating Conditions, High Reliability
With a maximum longitudinal and lateral tilt angle of 30° (for a short period of 3 minutes), it can operate stably on complex terrain, including slopes. Equipped with a 12V 3.0kW starter and a 500W air intake heater, it ensures smooth starting in low-temperature environments. A closed-circuit breathing system and high-efficiency air filter (intake resistance ≤ 2.94kPa) reduce impurity intrusion and extend engine life.
Stable Operation and Easy Maintenance
The idle speed is adjustable between 1000 and 2650 rpm. The electronic speed regulator responds quickly, with a transient speed regulation of ≤12%, minimizing speed fluctuations during load changes. The lubrication system utilizes forced lubrication, recommending API CF-4 grade engine oil. A paper oil filter ensures easy maintenance. The complete machine weighs approximately 260 kg, boasting a compact design and versatile installation.
