Products

SANHUA Automotive offers a wide array of products, with an emphasis on thermal management systems and new-energy vehicle HVAC systems. Our complete line of high-quality thermal management products gives us the opportunity to design solutions to our customers’ specific needs while maintaining a competitive price.

EXV

Electronic Expansion Valve

  • 2017 PACE Award Winner
  • Leading technology with precise flow control
  • Capable of total refrigerant shut off
  • Designed for under-hood environments
  • LIN integrated control board with OBD function
  • More than 10% system COP improvement
  • Proven reliability in high volume mass production

INTRODUCTION

SANHUA Automotive’s EXV (Electronic eXpansion Valve) was designed to replace conventional mechanical TXV (Thermal Expansion Valve) devices. The new EXV which can be controlled via a LIN or PWM signal is available for R134a, R1234yf and R744 refrigerant systems.

SAE J12275 MAC testing has proven that a SANHUA Automotive EXV can improve the refrigerant system COP of a typical passenger vehicle by more than 10% when tested at various points along the test matrix.  Studies have also indicated that an EXV can be especially effective in maximizing internal heat exchanger system performances. This EXV can precisely control compressor inlet superheat to achieve higher system efficiency by optimizing evaporator and IHX heat transfer more effectively than a conventional TXV. This superior, responsive and stable superheat control reduces a/c compressor loads which results in improved fuel economy, compressor reliability and refrigerant system NVH quality. EXV quality and durability are enhanced by self-lubricate design characteristics and the use of stainless material.

SPECIFICATIONS & PARAMETERS

ParametersValues
ReferigerantR134a/R1234yf, R744
Capacity0.7-3 Tonage (R134a/R1234yf); 1-3 Tonage (R744)
Oil typePAG/POE
Max. operating pressure34 bar (R134a/R1234yf); 170 bar (R744)
Ambient working temperature-40°C to 121°C
Burst pressure80 bar (R134a/R1234yf); 340 bar (R744)
Max. operation pressure differential (MOPD)25 bar (R134a/R1234yf); 105 bar (R744)
External tightness1 g/y
Voltage9-16 V
Nominal operation current0.35 A
Max. operation current0.5 A
Signal inputLIN 2.1
OBDStall detection; Coil open/short circuit; Chip over temperature
Refrigerant connectorSlimline (R134a/R1234yf) Vis-Connector/Conti-Lock (R744)