11/18/2023 0 Comments 2021 trax engine![]() The chromium steel pins are designed to be full-floating and must be serviced with the pistons as an assembly. The pistons use two compression rings and one oil control ring assembly. Its cast iron top ring provides added strength. The cast aluminum pistons in the 1.3L (元T) engine are a lightweight and low friction design with a recessed top and a barrel shaped, graphite-coated skirt. A harmonic balancer controls torsional vibration. Six counterweights have been scalloped for mass reduction and precision engine balance. The crankshaft is made of forged micro alloy steel. This design promotes the maximum effectiveness of the balance shaft system and further reduces engine noise and vibration. The engine oil pump supplies pressure to the hydraulic tensioner, which provides the chain's tension. The balance shaft and oil pump are driven by the balance shaft chain. The oil pump is attached to the lower structural extension of the engine block. The single balance shaft is internal to the engine block. The fuel injectors are located under the intake ports. The exhaust manifold is integrated into the cylinder head. Each combustion chamber contains four valves and is designed for increased swirl efficiency of the incoming air charge to maximize gasoline combustion efficiency. The cylinder head is a dual overhead camshaft design made of cast aluminum alloy. The lower structural extension forms the lower portion of the crankcase to promote cylinder block rigidity and reduce engine noise and vibration. There are four crankshaft bearings with the thrust bearing being located on the third bearing from the front of the engine. ![]() The aluminum alloy engine block is made by high pressure die casting with three cast-in-place iron cylinder liners called cylinder set strategy (CSS).
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