H Series Diesel Engine for Construction Machinery Manufacturer

H Series Diesel Engine for Construction Machinery

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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

Technical parameters

Diesel Engine	Engine Model	Displacement (L)	Aspiration	Rated Power		Peak Torque		Solution	Emissions Level
Diesel Engine	Engine Model	Displacement (L)	Aspiration	kW	r/min	N.m	r/min	Solution	Emissions Level
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
Diesel Engine	Engine Model	Displacement (L)	Aspiration	kW	r/min	N.m	r/min	Solution	Emissions Level
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
Diesel Engine	Engine Model	Displacement (L)	Aspiration	kW	r/min	N.m	r/min	Solution	Emissions Level
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.

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