□□□ ○ ○○ □ □
where, ○ represents an arabic numeral, and □ represents an alphabetic character.
1.1 The enterprise code is fixed as SQR;
1.2 The number of engine cylinders is a 1 to 2-digit integer;
1.3 The bore is the diameter of cylinder barrel, expressed by a 2 to 3-digit integer, and its decimal is rounded to
ainteger with the unit of mm according to the rounding principle.
1.4 Feature code: Represent the basic feature of an engine, expressed with a capital English alphabet, and its
meaning is shown in Table 1. If multiple features in Table 1 appear at the same time, a feature code is choosed in turn
according to the sequence specified in Table 2. In case that the line engine’s basic feature code L is omitted, the other
feature codes in Table 2 can be choosed in turn according to the sequence of these codes.
Table 1 Feature Code of Engine
Engine Characteristics Line engine V-engine
Feature Code L V
Engine Characteristics Direct injection
Gasoline combustion
rate variable valve
timing
Feature Code J H
Engine Characteristics
Diesel natural
aspirationi
Diesel turbo
Diesel turbo
intercooler
Gasoline turbo
intercooler
Feature Code D T A B
Engine Characteristics Carburetor Single point injection
Two-valve
multipoint injection
Four-valve multipoint
injection
Feature Code C M E F
Table 2 Sequence of Engine Feature Code Optional
1
st
Structure Line L (omitted) V
2
nd
Special technique J H
3
rd
Air intake D T A B
4
th
Fuel supply C M E F
1.5 Differentiation code: Expressed with a capital English alphabet, used as a complementary code to differentiate
the type of engine when all the number of engine cylinders, bore and feature code are the same while the structure,
main parameter(s) or fuel supply method and etc change (e.g., the change of engine stroke, bifuel engine, etc). For
the change of engine’s peripheral parts (such as intake and exhaust manifolds), the engine type is invaried but
differeniated by changing the number of engine assy.
1.6. Example of engine type:
“SQR473F” means a 4-cylinders, 73 mm bore , line gasoline engine manufactured by the CHERY Automobile
Feature Code
Differentiation code
Enterprise Code
Number of Cylinders
