Electrically driven Water Pump that operates on demand. The Electric Water Pump is not dependent on the engine as the ECU will activate the electric water pump and vary the pump speed and coolant flow rate based on the engine cooling needs. This minimizes the load on the engine which reduces fuel consumption and pollution.
Main Features/ Key Selling Point:
- The specific water pressure is achieved without excessive load to engine.
- AISIN’s aluminum die-casting technology allows for size and weight reduction.
- Improved strength in body design and carbon ceramic mechanical seals assures leak prevention.
| AISIN Water Pump | Competitors | |
|---|---|---|
| Better Application Range |
Found in >820 models (Aisin has the world’s largest OEM coverage among manufacturers) Water pumps are all built to OE requirement |
Limited applications for most |
| World-class Technology and Expertise |
Pioneer innovator of Electric Water Pump for hybrid vehicle applications Decades of accumulated knowledge from cooperation with automotive manufacturers |
Lesser experience and expertise in water pump manufacturing, and without product innovation |
| Premium Materials for Higher Performance |
Aluminum impeller: smooth surface, size & weight reduction, no failure problem found under rotation testing (@6,000 rpm / 28 hours) Polyurea grease improves lubrication and bearing lifespan |
Typically uses iron impeller, without benefits of aluminum impeller Most use lithium grease, which has a shorter lifespan |
| Superior Body Design |
Carbon ceramic mechanical seal: hard and resistant, leak proof Double lip seal protects against oil and dust |
65% of market complaints are related to leakage Tends to use single lip seal |

