| Displacement |
915 in3 |
15 L |
|---|
| Advertised Power |
400–475 hp |
298–354 kW |
|---|
| Peak Torque |
1,450–1,750 lb-ft |
1,966–2,373 N·m |
|---|
| Governed Speed |
2,100–2,200 rpm |
|---|
| Type |
compression-ignited, inline 6-cylinder |
|---|
| Oil System Capacity |
14 U.S. gal |
52.9 L |
|---|
| Coolant Capacity* |
0.89–1.87 U.S. gal |
3.37–7.05 L |
|---|
| LNG System Weight* |
+300–1,800 lbs |
+136–816 kg |
|---|
| Fuel Types |
LNG (primary) + diesel (pilot ignition) |
|---|
| Aftertreatment |
Retains OEM DPF and SCR systems |
|---|
* depending on LNG tank configuration.
 
(whichever comes first) |
maintenance item |
Every 4 months |
Conduct gas detection system function test1 |
Every 12 months
1,000 hours
31,250 miles (50,300 km) |
Conduct detailed gas leak check1
Conduct detailed diesel leak check
Replace primary (low pressure) diesel filter2
Drain vent stack filter2 |
Every 3 years
36,000 miles
(58,000 km) |
Inspect CNG accumulator1,2 |
Every 4,000 hours
125,000 miles (201,200 km) |
Inspect all fluid hoses for leaks and deterioration2
Replace hydraulic spin-on filter2
Replace high pressure natural gas filter2
Replace diesel pump drive belt
Replace aftertreatment diesel dosing pump filter2,3
Replace vent stack filter2 |
Every 4,500 hours
150,000 miles (241,000 km) |
Clean aftertreament fuel injector3 |
Every 4500 hours
200,000 miles (320,000 km) |
Change aftertreatment diesel exhaust fluid dosing unit filter3 |
Every 5,000 hours
150,000 miles (240,000 km) |
LNG pump maintenance (single tank system) |
Every 8,000 hours
250,000 miles (402,300 km) |
LNG pump maintenance (dual tank system) |
- or as per local regulations
- or as specified by OEM maintenance schedule
- if applicable
|
400–475 hp
1,450–1,750 lb-ft torque
EPA & CARB 2010
Coverage is for the following components:
- Base engine
- HPDI injectors
- LNG tank & fuel pump
| months | distance | hours |
|---|
| 24 |
250,000 mi
(402,336 km) |
6,250 |
| (whichever occurs first) |
|---|
The Solution for Regional and Long-Haul Trucking
The Westport HD System uses liquefied natural gas (LNG). Storing the natural gas as LNG instead of compressed natural gas (CNG) has many benefits, including:
- reduces filling times
- optimizes the truck’s fuel storage envelope, and
- maximizes vehicle range.
| (volumes in US gallons of LNG) | |
|---|
| tank 1 | tank 2 | gross | nominal | DEG* |
|---|
| 70 |
- |
70 |
63 |
32 |
| 100 |
- |
100 |
90 |
45 |
| 120 |
- |
120 |
108 |
55 |
| 70 |
70 |
140 |
126 |
64 |
| 70 |
100 |
170 |
153 |
77 |
| 70 |
120 |
190 |
171 |
87 |
| 100 |
100 |
200 |
180 |
90 |
| 100 |
120 |
220 |
198 |
100 |
| 120 |
120 |
240 |
216 |
110 |
| * diesel equivalent gallons @ 50 psi |
|---|
|
