HINO Ranger N4C

In-Depth Look at the N04C Engine

The N04C is a compact, turbocharged diesel engine that punches above its weight class.

Key Specifications & Features:

• Engine Family: N04C

• Displacement: 4.0 liters (3987 cc)

• Configuration: Inline-4 cylinder, DOHC, 16 valves

• Aspiration: Turbocharged with a Variable Geometry Turbo (VGT) and intercooled.

• Fuel System: High-Pressure Common Rail with very high injection pressures (up to 2500 bar+).

• Power Output: Varies by application, but commonly found in ranges from 150 to 190 horsepower.

• Torque Output: A very healthy 420 to 550 Nm, available at low RPMs.

Key Technological Features:

1. Compact and Lightweight Design: It was engineered to be smaller and lighter than previous engines of similar output, improving payload capacity and vehicle efficiency.

2. i-ART Fuel System (Intelligent Acoustic Control & Real Injection Technology): This is a Hino/Toyota innovation. Each fuel injector has its own built-in microcomputer and pressure sensor. This allows the Engine Control Unit (ECU) to precisely monitor and control injection timing and volume for each individual cylinder in real-time.

   • Result: Optimal combustion, maximum power, reduced noise, lower emissions, and improved fuel economy.

3. Full Suite of Emissions Controls: To meet JP09 (Japan) and Euro VI equivalent standards, the N04C is equipped with:

   • EGR Cooler: Recirculates exhaust gases to reduce NOx.

   • Diesel Particulate Filter (DPF): Traps soot.

   • Selective Catalytic Reduction (SCR): Uses AdBlue/DEF fluid to convert NOx into nitrogen and water.

   • Diesel Oxidation Catalyst (DOC): Helps oxidize pollutants.

Strengths of Hino Trucks with the N04C Engine

This engine brings modern advantages to the light/medium-duty truck segment.

1. Excellent Fuel Economy: The combination of the highly efficient i-ART fuel system, VGT turbo, and precise electronic control makes the N04C very fuel-efficient for its power class.

2. Strong, Responsive Power: The VGT turbo provides strong low-end torque, reducing turbo lag and making the truck feel lively and responsive in stop-start city driving.

3. Low Emissions and Environmental Compliance: This is its primary purpose. It allows Hino trucks to be sold and operated in regions with the strictest air quality laws.

4. Refined and Quiet Operation: For a commercial diesel, the N04C is relatively smooth and quiet, thanks to its advanced combustion control and balance shafts (on some versions).

5. Proven Reliability (with correct maintenance): While complex, the N04C has a reputation for being a reliable engine when maintained according to Hino’s strict specifications, particularly regarding fuel and AdBlue quality.