Open Chrome in incognito mode on real Android Device using Appium

I'm using Appium to test my website on Chrome for Android. I would like to add some options to Chrome for Android such as the incognito mode and the possibility to disable the cache. I tried with the following sample code but it doesn't work properly. Appium is able to open Chrome on my Android device, but it isn't in incognito mode and hence it doesn't disable the browser's cache.

Here there is the code snippet of my Python script:

import appium
from time import sleep

desired_caps = {
    'platformName' : 'Android',
    'platformVersion' : '7.1.1',
    'deviceName' : 'ZX1G423BZQ',
    'browserName' : 'Chrome',
    'chromeOptions': {'args':['--incognito', '--disable-cache']}
}

driver = appium.webdriver.Remote("http://127.0.0.1:4723/wd/hub", desired_caps)
driver.get("http://www.google.com")

timings = driver.execute_script('return performance.timing')
print(timings)

driver.quit();

My environment is as follow: