Hyundai KIA 1.0 MPi/T-GDi Engine (Kappa G3LA/G3LC) Specs, Problems, and Reliability. The Hyundai 1.0 L MPi engine out of the Kappa household is a three-cylinder gasoline engine with multi-point fuel injection, and a part of the Hyundai-Kia product technique directed to a high achievement with fuel effectiveness. The engine was revealed in 2011 and it is still a popular powerplant for the Hyundai i10 and KIA Picanto.
The cylinder block is aluminum and developed as an open-deck type with cast iron liner. There is also a cast iron crankshaft. The shape of counterweights was enhanced to reduce vibrations of a three-cylinder engine, that made it possible to omit balance shaft from the design. The crankshaft seats in the block with the 11 mm balanced out versus the cylinders line. For friction decrease, optimized light-weight pistons with a compression height of 24.7 mm and a brief skirt length were used. Piston rings are coated with Physical Vapour Deposition (PVD); piston skirts are MoS2-coated.
The 1.0 L Kappa engine has an aluminum cylinder head with four valves per cylinder and double overhead camshafts. The head design includes pent-roof combustion chambers and tumble intake ports. The intake and exhaust camshafts are driven by a timing chain. The first in 1.0-liter class, the valvetrain was geared up with Double Continuously Variable Valve Timing (Dual-CVVT) system. To decrease valvetrain inertial mass and friction, engineers used mechanical lash adjusters (MLA tappets) with thin walls and taper valve springs.
The G3LA is a naturally aspirated engine, which has a hassle-free port fuel injection. The intake system includes two intake manifold alternatives – with constant length or variable length (Hyundai’s VIS). Both of them are made of plastic to reduce weight and expenses. The exhaust manifold is made of cast iron – a bit heavier than a stainless steel one however 30% more affordable.
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Hyundai KIA 1.0 MPi/T-GDi Engine Specs, Problems, Reliability
In 2014, Hyundai announced a turbocharged Kappa 1.0 L G3LC engine at the Paris Automobile Show. As the N/A version, the new engine is all aluminum, but the cylinder head was significantly modified. The head has an integrated water-cooled exhaust manifold. That offers a quicker warm-up catalyst and reduces thermal tension and wear to the turbocharger. The new engine includes a single-scroll turbocharger and an electronically-controlled wastegate which enhances low-end torque and throttle response. Multipoint fuel injection was replaced with direct injection. High-pressure fuel pump produces pressure up to 200 bar (2,900 psi) and products fuel for the six-hole direct injectors installed in the cylinder head. Fuel is delivered directly into combustion chambers.
The G3LC engine has a new split-cooling concept. The cooling system includes 2 separate cooling channels for the cylinder head and engine block. Each of the channels has a private thermostat. The cylinder block is heated more for lower friction and more efficiently run. The cylinder head is operating at lower temperatures to optimize injection and combustion.
The 1.0 L MPi and 1.0 L T-GDi Kappa engines satisfy a growing need for smaller sized engines with low fuel usage and CO2 emission. Again, Hyundai was able to provide as a simple solution as a more advanced variant with affordable price.
Hyundai Kia 1.0 L MPi/T-GDi Engine Problems and Reliability
Despite the fact that a lot of effort was put into operation optimization of the three-cylinder engine, numerous owners complain of high levels of vibration and noise. Genuine fuel usage does not always correspond to the stated by the producer. Little engines are sensitive to increased loads due to a little torque, which causes increased fuel usage. The most harmful issue is that Hyundai’s 1.0-liter three-cylinder engine overheats quickly if you do not watch on the condition of the radiator.
In general, Kappa engines are extremely reputable and the drawbacks are related to exploitation for the most part. Average engine life for both power units has to do with 120,000 miles (200,000 km).
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Hyundai KIA 1.0 MPi/T-GDi Engine Specs
| Manufacturer | Hyundai Motor Co. |
| Production years | 2011-present day |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Multi-point fuel injection; Direct injection |
| Configuration | Inline |
| Number of cylinders | 3 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 71.0 mm (2.80 in) |
| Stroke, mm | 84.0 mm (3.31 in) |
| Displacement, cc | 998 cc (60.9 cu in) |
| Type of internal combustion engine | Four-stroke, naturally aspirated/turbocharged |
| Compression Ratio | 10.5:1 – MPi 10.0:1 – T-GDi |
| Power, hp | 66 hp (48 kW) /5,500 – MPi 68 hp (49 kW) /6,200 – MPi LPG version 100 hp (74 kW) /4,500 – T-GDi 120 hp (88 kW) /6,000 – T-GDi |
| Torque, lb ft | 70 lb-ft (95 Nm)/ 3,500 – MPi 66 ft-lb (90 Nm)/ 3,500 – MPi LPG version 127 ft-lb (172 Nm)/ 1,500-4,500 – T-GDi |
| Engine weight | 157 lbs (71.4 kg) – 1.0L MPi |
| Firing order | 1-3-2 |
| Engine oil weight | 5W-30 – MPi 5W-40 – T-GDi |
| Engine oil capacity, liter | 3.6 (0.3 – oil filter) |
| Oil change interval, mile | 9,000 (15,000 km) / 12 months |
| Applications | Hyundai i10, Hyundai i20, Hyundai i30, Hyundai Kona, KIA Ceed, KIA Stonic, KIA Picanto, KIA Rio |
