EA086 or VW prechamber diesel engines

The Volkswagen EA086 prechamber diesel engine series was produced from 1978 to 2003 with working volumes of 1.5, 1.6, 1.7 and 1.9 liters, in atmospheric and turbocharged versions. It was on the basis of this line that all subsequent 4-cylinder diesel engines of the concern were created.

Diesel engines EA086 1.5-, 1.6-, 1.7-liter

In August 1978, a 1.5-liter CK diesel debuted on the first generation Passat. This power unit was based on the already massive gasoline engine of the EA827 series, and its block and piston group were naturally reinforced for an increased compression ratio.

Diesel fuel injection into the prechambers was carried out by a Bosch VE distribution pump, and the single camshaft was driven by a belt. All engines of this line were 8-valve. Hydraulic compensators in the units of this series appeared only after modernization in 1985.

Over time, the working volume increased and such diesel engines with a volume of 1.6 and 1.7 liters appeared:

• CK (atmospheric, 50 hp / 80 Nm);
• CR (atmospheric, 54 hp / 102 Nm);
• CS (atmospheric, 50 hp / 103 Nm);
• JK (atmospheric, 54 hp / 100 Nm);
• JP (atmospheric, 54 hp / 100 Nm);
• 1V (turbocharged, 60 hp / 110 Nm);
• CY (turbocharged, 70 hp / 133 Nm);
• JR (turbocharged, 70 hp / 133 Nm);
• JX (turbocharged, 70 hp / 138 Nm);
• MD (turbocharged, 70 hp / 133 Nm);
• MF (turbocharged, 70 hp / 133 Nm);
• RA (turbocharged, 80 hp / 155 Nm);
• SB (turbocharged, 80 hp / 152 Nm);
• KY (atmospheric, 57 hp / 103 Nm).

Diesel engines EA086 1.9-liter

In 1989, a 1.9-liter 1Y diesel engine appeared on the third generation Passat. By design, the new engine did not differ much from its predecessors, but it was with it that the particularly widespread use of heavy fuel units in passenger cars began.

The network has information about 5 options for 1.9-liter engines in atmospheric and turbo versions:

• 1X (atmospheric, 60 hp / 127 Nm);
• 1Y (atmospheric, 68 hp / 127 Nm);
• AEF (atmospheric, 64 hp / 125 Nm);
• AAZ (turbocharged, 75 hp / 140 Nm);
• ABL (turbocharged, 68 hp / 140 Nm.

EA086 swirl chamber diesel engines were installed on the Caddy until the mid-2000s, but by the end of the 90s they were replaced by EA180 engines with direct injection on passenger cars.