Reciprocating internal combustion engine
The
Mazda
Z
-series is a smaller gasoline
inline-four engine
ranging in displacements from 1.3 L to 1.6 L. They are the evolution of the cast-iron block
B-engine
.
The Z-engine has
16-valves
operated by
dual overhead camshafts
, which are in turn driven by a
timing chain
(ZJ/Z6/ZY only). The block of the 98-02 Z5, ZM and ZL engine is
cast iron
same as the earlier B series of engines.
Other Z engines have
aluminum alloy
block and head, with cast-iron
cylinder liners
.
The block features split upper and lower block assembly for added strength and rigidity, special long
intake manifold
for added
torque
,
S-VT
continuous
variable valve timing
, and a
stainless steel
4:1
exhaust header
.
In 2011, Mazda started to introduce the
SkyActiv-G
as a new, more economical option for vehicles that were equipped with the Mazda Z-engine. Production of the Z-series halted in 2014, being the last year of the Mazda2, Verisa as well as Mazda3 of their generations. Mazda moved on to the full SkyActiv architecture in their vehicle lineup, including running only the aforementioned SkyActiv-G engine, now offered in larger displacements, alongside a new
SkyActiv-D
turbo-diesel engine.
The 1.5 L (1,489 cc) 92 hp (69 kW; 93 PS)
Z5-DE
was used in the 1995-1998
Mazda Protege
, Mazda Lantis (Astina) and in Mazda Familia Neo (1994?1997). Bore and stroke were 75.3 mm × 83.6 mm (2.96 in × 3.29 in).
The Z5 engine was introduced as the first of a newer line of Mazda Z-series engines. The Z series was a new design based on the B-series block, block internals and oil-pan and a different
DOHC
head.
[1]
Early versions of this motor had a chain driven exhaust cam.
The block is cast iron, the oil-pan is a 2-piece design with an upper aluminum and lower stamped steel, piston oil squirters are standard. The
cylinder head
was a compact design with round intake and exhaust ports.
JDM
versions produce 97 PS (71 kW; 96 hp) and 110 PS (81 kW; 108 hp). There was also
lean-burn
version introduced in August 1995; this model produces 94 PS (69 kW; 93 hp) and sees gas mileage improvements of ten to fifteen percent in the standard Japanese test cycle.
The 1.3 L (1,348 cc)
ZJ
74 mm × 78.4 mm (2.91 in × 3.09 in) is available with either continuous cam-phasing VVT
ZJ-VE
91 hp (68 kW; 92 PS) or a high-efficiency
Miller cycle
ZJ-VEM
90 hp (67 kW; 91 PS).
Applications:
1.5 L (1,498 cc) 111 hp (83 kW; 113 PS)
ZY-VE
78 mm × 78.4 mm (3.07 in × 3.09 in)
1.5 L (1,498 cc) 88 hp (66 kW; 89 PS) EEC, 110 hp (82 kW; 112 PS) JIS,
ZL-DE
78 mm × 78.4 mm (3.07 in × 3.09 in)
1.5 L (1,498 cc) 130 hp (97 kW; 132 PS) JIS
ZL-VE
78 mm × 78.4 mm (3.07 in × 3.09 in)
The 1.5 L ZL-VE makes more power than the slightly larger 1.6 L Z6/M-DE its due to variable valve timing on the intake cam (S-VT).
Applications:
1.6 L (1,598 cc) 105 hp (78 kW; 106 PS)
ZM-DE
78 mm × 83.6 mm (3.07 in × 3.29 in)
The ZM engine, has an identical bore yet slightly longer stroke than the ZL as well as a revised head with round intake and exhaust ports. It has exactly the same bore and stroke as the previous generation B6. Some European variants would use VICS on the intake manifold.
1.6 L (1,598 cc) 97 hp (72 kW; 98 PS)
ZM-II
was a variant of the ZM designated to the company Haima to use on the Haima Family. When the Mazda contract to Haima expired the engine was rebranded as a ZM-D and no longer would bear any Mazda markings on the valve cover.
The 1.5 L (1,498 cc) 130 hp (97 kW; 132 PS)
ZL-VE
and 1.6 L (1,598 cc) 105 hp (78 kW; 106 PS)
ZM-DE
are closely related engines with an equal bore 78 mm (3.1 in) and share some major parts. The ZL has a stroke of 78.4 mm (3.09 in) whilst the ZM has 83.6 mm (3.29 in).
Applications:
References
[
edit
]
- ^
Z5 Dohc Manual 1994 1999
. Mazda.
External links
[
edit
]
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