In recent years, the overall level of domestic bulldozers have been greatly improved in appearance, noise control, mechatronics applications, powertrain optimization, application and overall comfort, reliability, and hydraulic control system of the new technology and other aspects of foreign advanced level there is a large gap.

  (L) Product Reliability

  China's construction machinery Mean time between failures (MTBF} by the 1980s to the current nearly 100h 300h, crawler bulldozer MTBF of 470h,, up to 1000h, most of the foreign construction machinery in more than 1000 h maximum of 2000h foreign crawler dozer models 147 k} V below the average life of 10000 h, 147k} V models over the average life of 2}. (x 0}, the same type of products the average life less than its l / 2oo. Therefore, reliability is the most important issue of the industry.

  (2) the level of technical performance

  Domestic bulldozer on handling, comfort, energy efficiency, noise, pollution, construction quality and productivity and other indicators have lagged behind the world advanced level, in many advanced technologies, structures, materials and technology there is a big gap, inadequate control technology mainly in microelectronics applications, hydrostatic transmission technology applications and electro-hydraulic servo control technology applications for further study and improvement of automatic leveling technology is based on C Xing global positioning systems, laser, ultrasound and other precision auto-leveling technology push Application of soil technology needs further promotion and application.