Note: Nothing in this standard supercedes
applicable laws and regulations.
Note: In the event of conflict between the
English and domestic language, the English language shall take
precedence.
Purpose. The low temperature coolant surge tank
typically used on hybrid vehicles provides a pressurized reservoir
for keeping the permanent coolant system pressure during the engine
operation, coolant/air separation, coolant expansion and
contraction, and a fill port for the assembly plant. Its design is
critical to the operation of the powertrain cooling system as it
must maintain a fully separated air/coolant system. The engineering
test schedule contained within this specification defines the
minimum performance and durability criteria necessary for design
and production validation. In addition, the minimum requirements
for in process testing of on-going production are outlined. The
schedule is intended as a supplement to normal material
inspections, dimensional checking and in process controls, and
should in no way adversely influence adherence to other inspection
operations.
Applicability. Bill of Material (BOM) Row 344
Surge Tank.
Remarks. This standard establishes the
requirements for a Hybrid Coolant System Surge Tank Assembly. The
functions, performance, design constraints, and validation required
of the component are defined in this document. All requirements of
this specification must be met in order to demonstrate design and
production validation.