The brand's sales in China soared by 76 percent to 30,046 units in 2014 from a year earlier.
Both the Q50L and QX50 are produced at Infiniti's parent company Nissan Motor Co and China's Dongfeng Motor Group in Xiangyang.
The Q50L hit the market in November last year to compete with the Audi A4L, BMW 3 Series and Mercedes-Benz C-Class.
The QX50 is due to go on sale in the first quarter of this year and will go head-to-head with the Audi Q5, BMW X3 and Mercedes-Benz GLK.
"We have great confidence that the two locally made models will help us grow sales rapidly this year," Kirchert told China Daily, without giving specific figures.
Infiniti was a latecomer to China but has ambitions to become the fourth main player in the luxury car market after Germany's Audi, BMW and Mercedes-Benz, which control nearly 80 percent of the Chinese market, according to Kirchert.
Lei Xin, executive vice-president of Dongfeng Infiniti, said young buyers' growing demand for "cutting-edge and personalized" products would bring great opportunities for the Japanese brand to grow rapidly.
Although China's economy will continue to slow, luxury car sales in the country will rise 15 percent this year, almost double that of the overall passenger vehicle market, Lei predicted.
Infiniti plans to import a new Q70 large sedan to China in the second half of this year. Its major rivals include the Audi A6L, BMW 5 Series and Mercedes-Benz E-Class.
Kirchert stressed that Infiniti will further raise brand awareness and customer experience in China with its Gan Ai, or dare to love, marketing campaign.
"We will let customers enjoy the appeal of Infiniti as the most emotional premium brand through activities ranging from our products, networks, services to our corporate social responsibility work," he said.
Infiniti will join hands with famous Chinese actress Zhou Xun for its QX50 SUV marketing campaign this year.
The brand plans to open 25 to 30 new dealerships in China in 2015. By the end of last year, it had 85 dealerships.