Water Pumps

High-reliability Water Pump Developed from the Engine System Requirements

• The material of mechanical seals having a large role to play in preventing cooling water leakage changed to silicon carbide (SiC) from alumina. Thereby heating in the sliding portion and wear of the sliding member are prevented. Sealability is also improved.
• The triple lip seal is adopted as the bearing seal on the rear side. The bearing damage caused by which cooling water leaking from the mechanical seal infiltrates in the bearing, is prevented

3-stage variable discharge oil pump

Variable valve timing

Optimal Control of Intake/Exhaust Valves for Improving Fuel Efficiency, Exhaust, and Output Power

• Fuel consumption during idling has been improved. Harmful substances in exhaust have been decreased on middle load conditions. Output has been improved on high load conditions
• Highly efficient operation possible by optimal designing in response to any conditions with combination of our current oil pump
• Product series compatible with various engines are available

Oil control valve

Ultra-compact, lightweight and low cost attributes are achieved through innovations in the magnetic component design

• Compactness in magnetic components is made possible using thin resin molding technologies
• Black scale of magnetic circuits is achieved using high-precision thickness-deviation press technologies

Resin-type surge tank & aluminium-type intake manifold

Variable intake manifold using rotary valve

High output is achieved by switching intake ports according to driving conditions

• Cost and weight are reduced by applying resin intake manifolds and variable valves
• Engine output is improved by optimally controlling air flow to cylinder chambers by switching passages having different length
• To improve engine output, a rotary valve, which has low intake pressure loss, is used for a variable intake portion

Piston

Oil pan

Alumium type cylinder head cover

Magnesium type cylinder head cover

Fuel rails

Electric oil pump for cooling the motor

Compact, Lightweight and Long-life Electric Oil Pump

• Downsizing by integration of control circuit, motor and pump enables various kinds of vehicles to mount
• Noise is reduced by optimizing motor control
• The product line up from small capacity (for assisting hydraulic pressure of VVT) to large capacity (for controlling hydraulic pressure of AT) is available

Electric water pump for cooling the inverter

Compact, Lightweight and Long-life Electric Water Pump

• Downsizing by integration of control circuit, motor and pump enables various kinds of vehicles to mount
• Noise is reduced by optimizing motor control
• The product line up from small capacity (for cooling inverters) to large capacity (for cooling engines) is under development

Electric water pump for cooling engine

Japanese first electric water pump for cooling engine increases better fuel efficiency for Hybrid vehicles

• Improved installability by downsizing the electric water pump by the integration of electrical control circuit, motor, and pump
• Realizeｄ low-power consumption by increasing operational efficiency of electrical control circuit, motor, and pump and by optimizing their combination