Diesel engine ZS-T (2.2) — description [Toyota Camry Vista-V40]

The ZS-T engine is in-line, 4-cylinder, 8-valve with an overhead camshaft. The engine displacement is 2.2 liters. The cylinders are numbered from the crankshaft pulley.

Engine firing order: 1-3-4-2.

The crankshaft is 5-bearing with 8 counterweights installed on the continuation of the crankshaft cheeks, designed to relieve the main bearings from the action of centrifugal forces. The crankshaft has holes for supplying oil to the main and connecting rod bearings and other elements.

The cylinder head is made of aluminum alloy.

The exhaust and intake valve springs are made of special carbon steel and have a variable pitch, which helps reduce the likelihood of resonance.

Camshafts

The camshaft is driven from the crankshaft by means of a toothed belt.

The camshafts have 5 bearing journals. The journals, cams and gears of the camshaft drive are lubricated with oil, which enters through an oil channel located in the center of the shaft.

The clearance in the valve drive is adjusted by replacing the adjusting washers in the valve tappets. The adjusting washers can be replaced without removing the camshafts.

The pistons are made of aluminum alloy.

Piston pins are of the "floating" type.

Compression rings: the upper compression ring is made of stainless steel, the lower compression ring is made of cast iron.

The oil scraper ring consists of two scrapers and an expander. The oil scraper ring removes excess oil from the cylinder walls, preventing it from entering the combustion chamber.

The cylinder block is cast from cast iron. The upper part of the cylinder block is covered by the cylinder head, and the lower part of the block forms the engine crankcase, in which the crankshaft is installed. The cylinder block has a cooling jacket through which the coolant circulates.

The oil pan is bolted to the cylinder block. The oil pan is stamped from sheet steel. A baffle plate inside the oil pan keeps enough oil in place even when the car is tilted. The baffle plate also prevents oil waves from being created when the car brakes hard.