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Near that same time, Kia told NHTSA about a recall of more than 618,000 model year 2011-2014 Kia Optima, 2012-2014 Sorento and 2011-2013 Sportage vehicles because the Theta engine bearings wore out too early and caused the engines to seize. [5] Kia said it didn't recall the vehicles in 2015 when Hyundai first recalled its cars because the Theta ...
A low-pressure injector then sprays fuel into the combustion chamber, where it vaporizes as it mixes with the compressed air. A high-pressure GDI system was developed by German company Ficht GmbH in the 1990s and introduced for marine engines by Outboard Marine Corporation (OMC) in 1997, in order to meet stricter emissions regulations. However ...
Lean-burn gas engines are almost always turbocharged, resulting in high power and torque figures not achievable with stoichiometric engines due to high combustion temperatures. Heavy duty gas engines may employ precombustion chambers in the cylinder head. A lean gas and air mixture is first highly compressed in the main chamber by the piston.
The Hyundai R engine is a diesel 4-cylinder automobile engine produced by Hyundai Motor Group, it was announced during the Advanced Diesel Engine Technology Symposium in November 2008 and began production in 2009. [1]
The G4HD/G4HG is a 4-cylinder 3 valves per cylinder engine that displaces 1.1 L (1,086 cc) with a larger 67 mm × 77 mm (2.64 in × 3.03 in) bore and stroke. This engine has been used in Hyundai's i10 (PA), Atos, Santro Xing cars and Kia Picanto. Firing Order of this engine is 1-3-4-2 and idle RPMs are 750± 100.
The 1.6 L (1,582 cc) U diesel engine (known as D4FB) from the Žilina Kia factory in Slovakia is a bored-out version of the 1.5 litres (1,493 cc) U series engine, 77.2 mm (3.04 in) versus 75 mm (2.95 in). In 2009, it was refined to the 1.6 U2 version, with a new displacement, developing 126 hp (94 kW; 128 PS) and 195 lb⋅ft (264 N⋅m) of torque.
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Engines must be designed so that ignition conditions occur at the desired timing. To achieve dynamic operation, the control system must manage the conditions that induce combustion. Options include the compression ratio, inducted gas temperature, inducted gas pressure, fuel-air ratio, or quantity of retained or re-inducted exhaust.