Source notes
Source-specific specification: VMAN 2026 gas/methanol catalogue, HND CHG620/622 section, PDF p46 (printed p45): vman-engine.com · PDF .
Rated mechanical engine output 1600 kW at 1500 rpm; associated electrical output 1500 kWe is distinct.
Source does not establish PRP/ESP duty, so all prime/standby fields remain unset.
Natural-gas test basis includes methane >=95%; do not apply unchanged to low-calorific gases.
Bore/stroke 170/215 mm.
Oil capacity unresolved: overview table lists 280 L, but lubrication table PDF p47 (printed p46) lists 240 L; neither is confirmed as the service-fill quantity; cooling-water capacity 180 L; listed mass is dry engine weight.
These specifications are verified against the supplier-published table, not a newly obtained HND factory datasheet.
Exact designation is CHG622V16; it is not assumed interchangeable with CHG620V16.
Supplier prints displacement 78.04 L, retained literally; no diesel-variant displacement substituted.
Current factory production status is unconfirmed.
Discontinued is the owner-approved catalogue classification for unknown production status, not a manufacturer-confirmed discontinuation.
Additional source-specific supplier specifications, VMAN 2026 catalogue PDF p47 (printed p46), visually verified: exhaust temperature <=580 C; separately listed maximum exhaust temperature 620 C; exhaust mass flow including H2O 7495 kg/h; exhaust pipe DN400; combustion-air mass flow 7221 kg/h.
Natural-gas requirements: CH4 >=80%, methane number >=80; gas valve-group inlet pressure 30-50 kPa; engine inlet gas pressure 6-10 kPa; heating-value change <=2%/min; H2S <=20 mg/Nm3; total sulfur <=200 mg/Nm3.
Lubricating-oil pressure >300 kPa at idle and 460-520 kPa at rated speed; maximum permissible oil temperature <=90 C.
The >=80% methane gas requirement is distinct from the >=95% methane performance-test basis and does not establish full rated power on all qualifying gases.
Exhaust-back-pressure conflict remains unresolved: this technical table lists maximum 2.5 kPa, while the overview test conditions state <5 kPa; no single installation limit is asserted.
Cooling-system supplier data, PDF p48 (printed p47): high/low-temperature heat dissipation 872/150 kW; jacket/intercooler water flow 75/65 m3/h; high-temperature water I/O 74 to 84 C; low-temperature water I/O 43 to 45 C; maximum jacket-water temperature 90 C; high/low-temperature water pressure 0.23/0.13 MPa; jacket-water connection DN80/PN16; intercooler-water connection DN65/PN16.
These are source-listed operating parameters, not a completed site cooling-system design.
