H Series Diesel Engine for Construction Machinery
  • H Series Diesel Engine for Construction Machinery
  • H Series Diesel Engine for Construction Machinery
  • H Series Diesel Engine for Construction Machinery

H Series Diesel Engine for Construction Machinery

Description

The SDEC H series engine features a small volume, strong power, reliability and durability. Compared to similar products, it is popular on the construction machinery market for its advantages of a large torque reserve coefficient, good cold stating performance, low fuel consumption, low vibration and noise. The torque reserve is as high as 36%, and the power covers 60-162kW, meeting Off-Road China III and higher emission standards.

The H series engine was jointly designed by SDEC and the UK company RICARDO by referencing Chinese market characteristics and the internationally proven technology found in advanced engines. By using GPDP development processes and following SAIC MOTOR manufacturing standards, it is a new generation four-valve engine, whose reliability and economy are at world first-class levels.

Outline dimensional drawing
  • H Series Diesel Engine for Construction Machinery
  • H Series Diesel Engine for Construction Machinery
Technical parameters
Diesel Engine Engine Model Displacement (L) Aspiration Rated Power Peak Torque Solution Emissions Level
kW r/min N.m r/min
4H SC4H80 4.3 TA 58.8 2300 270 1400 CRS\EGR China III
4H SC4H100 4.3 TA 73.5 2200 420 1400 CRS\EGR China III
4H SC4H 100.1 4.3 TA 73.5 2000 420 1400 CRS\EGR China III
4H SC4H105 4.3 TA 77.3 2300 430 1400 CRS\EGR China III
4H SC4H110 4.3 TA 83 2200 465 1400 CRS\EGR China III
4H SC4H 110.1 4.3 TA 82 1800 488 1200 CRS\EGR China III
4H SC4H 115.1 4.3 TA 85 2000 470 1400 CRS\EGR China III
4H SC4H115 4.3 TA 85 2200 500 1400 CRS\EGR China III
4H SC4H125 4.3 TA 92 2200 540 1400 CRS\EGR China III
4H SC4H 125.1 4.3 TA 92 2000 540 1400 CRS\EGR China III
4H SC4H 125.2 4.3 TA 92 1800 540 1300 CRS\EGR China III
4H SC4H130 4.3 TA 95 2000 540 1400 CRS China III
4H SC4H140 4.3 TA 103 2200 600 1400 CRS China III
4H SC4H 140.1 4.3 TA 103 2000 600 1400 CRS China III
4H SC4H 140.2 4.3 TA 103 1800 600 1400 CRS China III
Diesel Engine Engine Model Displacement (L) Aspiration Rated Power Peak Torque Solution Emissions Level
kW r/min N.m r/min
7H SC7H125 6.5 TA 92 2200 540 1400 CRS\EGR China III
7H SC7H125.1 6.5 TA 92 2000 550 1400 CRS\EGR China III
7H SC7H130 6.5 TA 97 2200 570 1400 CRS\EGR China III
7H SC7H140.1 6.5 TA 105 2300 590 1500 CRS\EGR China III
7H SC7H140 6.5 TA 105 2200 615 1400 CRS\EGR China III
7H SC7H145 6.5 TA 107 2200 625 1400 CRS\EGR China III
7H SC7H150 6.5 TA 112 2200 660 1400 CRS\EGR China III
7H SC7H150.1 6.5 TA 112 1950 660 1300 CRS\EGR China III
7H SC7H150.2 6.5 TA 112 1800 700 1260 CRS\EGR China III
7H SC7H160 6.5 TA 118 2200 690 1400 CRS\EGR China III
7H SC7H160.1 6.5 TA 118 2000 700 1400 CRS\EGR China III
7H SC7H160.2 6.5 TA 118 1800 750 1300 CRS\EGR China III
7H SC7H165 6.5 TA 121.5 2200 710 1400 CRS\EGR China III
7H SC7H170 6.5 TA 125 2200 730 1400 CRS\EGR China III
7H SC7H170.1 6.5 TA 125 2000 750 1300 CRS\EGR China III
7H SC7H175 6.5 TA 128 2200 750 1400 CRS\EGR China III
7H SC7H175.1 6.5 TA 128 2000 750 1300 CRS\EGR China III
Diesel Engine Engine Model Displacement (L) Aspiration Rated Power Peak Torque Solution Emissions Level
kW r/min N.m r/min
7H SC7H 175.2 6.5 TA 128 1800 820 1300 CRS\EGR China III
7H SC7H180 6.5 TA 132 2200 770 1400 CRS\EGR China III
7H SC7H 180.1 6.5 TA 132 2000 850 1300 CRS\EGR China III
7H SC7H 180.2 6.5 TA 132 1800 840 1300 CRS\EGR China III
7H SC7H190 6.5 TA 140 2200 820 1400 CRS China III
7H SC7H 190.1 6.5 TA 140 2000 850 1300 CRS China III
7H SC7H 190.2 6.5 TA 140 1800 900 1300 CRS China III
7H SC7H200 6.5 TA 147 2200 830 1400 CRS China III
7H SC7H200.1 6.5 TA 147 2000 850 1300 CRS China III
7H SC7H210 6.5 TA 155 2200 840 1400 CRS China III
7H SC7H210.1 6.5 TA 155 2000 880 1300 CRS China III
7H SC7H220 6.5 TA 162 2200 860 1400 CRS China III
7H SC7H220.1 6.5 TA 162 2000 930 1300 CRS China III
Note
Bore x stroke(mm) Aspiration Type Compression ratio Solution
4H/7H 105x124 Na naturally aspirated TA Turbocharged and intercooled 4H In-line, four cylinders 7H In-line, six cylinders 17.5-18.5: 1 CRS electronically controlled common rail EGR mechanical pump ＋ external EGR
Features
Fuel system Electronically controlled common rail design: the HP3 third generation electronic control system is customized by Denso for the H series, with an injection pressure of 1800bar. It uses a ceramic coated 7-hole fuel injector from Denso. Nozzle: the precisely controlled multiple injection and vertically and centrally mounted fuel injector arrangement results in a uniform atomization and full combustion. Mechanical pump: high quality mechanical pump + external EGR It has a high reliability and long service life. Its fuel consumption is 10% lower than similar products. This engine meets non road China III and above emission standards
Gas system Electronically controlled ECU, sensor, electronic throttle, sparking coil and other key components are all from internationally known brands. According to different application markets, the 4HT uses a BOSCH control system and the 7HT uses aWOODWARD control system. It is advanced, economical and reliable.
Aspiration method With four-valves per cylinder, the turbocharger (optional for two-stage supercharging) and intercooler are installed to achieve a higher air intake efficiency and reach the optimized matching of power performance and economy. The optimized designs of the combustion chamber and eddy current ratio airway improve the combustion efficiency. With a high power density and fast transient load response, the maximum torque reserve is up to 36%, which is 20% higher than similar products. With a strong power, it has good adaptability to working conditions. With low fuel consumption, the operation cost is low.
Design features Referring to international first-class engine standards and using GPDP development processes, it is designed jointly with the UK company HRICARDO, following an allowable peak pressure of 180bar. It uses a rear gear chamber, high strength alloy cylinder block, closed-loop frame structure, diaphragm plate for main bearing and other designs for vibration and noise reduction. Its size is 77-140mm shorter than similar products. The advanced nature and reliability are guaranteed. The noise is reduced by 3dB to ensure comfortable driving. With convenient and flexible arrangement, the heat dissipation performance is great.
Reliability features It uses a high strength frame type cylinder block structure and modular design, integrating the engine oil cooler, pump and oil pump. During the research and development stages, we conducted over 2000h of testing for frame reliability and durability, and over 1 million km of plateau, and extremely hot and cold road tests. Automatic production and assembly lines for H series are customized by HELLER, KUKA, US0N and other international first-class equipment manufacturers, and it uses an MES control system. By referencing the SPS system guarantee of German Volkswagen manufacturing standards, the product has an excellent consistency and high reliability. The maintenance cost is reduced, with an excellent plateau adaptability and no downtime.
Matching adaptability With optional displacements of 4.3L and 6.5L, optional engine fuels of diesel and natural gas, the continuously serving power covers 60-162kW. Without an auxiliary air intake heating device, the cold starting temperature is -15℃. Based on the assembly configuration and actual operating condition, the engine and assembly are performed matching optimization and customization. There are various configurations for flywheel, flywheel house, engine, air compressor, steering pump and other peripheral parts to choose from. And there are various structures and types for PT0 and oil pan. The fuel has diverse selections and the power range is wide. It has an environmental adaptability. The power performance and economy are simultaneously optimized. It can meet various application demands.
Maintenance Using cracking connecting rod, the maintenance accessibility is good. The electronically controlled system provides intelligent real-time diagnosis. The average overhaul interval is over 15000h, which is extended 50% longer than the similar products. The wear resistant valve mechanism design extends the valve clearance adjustment interval by100%. The maintenance is convenient with high uptime.

Related Products
diesel engine for construction machinery, SDEC engine, construction equipment power
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Shanghai New Power Automotive Technology Company Limited.
Add.: NO.2636 Jungong Road, Shanghai, 200438

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